[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User oc changed the following: What|Old value |New value Status|RESOLVED |VERIFIED --- Additional comments from o...@openoffice.org Wed Sep 9 15:15:59 + 2009 --- verified in internal build cws_odff06 - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from e...@openoffice.org Thu Sep 3 12:34:43 + 2009 --- I used this one now: Calculates the probability of observing a z-statistic greater than the one computed based on a sample. revision 275752 sc/source/ui/src/scfuncs.src - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User er changed the following: What|Old value |New value Assigned to|er|oc --- Additional comments from e...@openoffice.org Thu Sep 3 20:16:04 + 2009 --- Reassigning to QA for verification. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from e...@openoffice.org Wed Aug 26 13:06:09 + 2009 --- In http://sc.openoffice.org/servlets/ReadMsg?list=devmsgNo=3673 Leonard Mada suggested the following description: calculates the probability of observing a value as large or larger for the z-statistic Would that do? - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from reg...@openoffice.org Wed Aug 26 16:06:37 + 2009 --- No. The comparison larger is incomplete, missing a than part. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from drk...@openoffice.org Tue Aug 25 07:20:40 + 2009 --- Our proposal for the function wizard:- function description: calculates the probability of a sample mean greater than the mean of the given sample. first parameter The given sample, drawn from a normally distributed population second parameter The known mean of the population third parameter The known standard deviation of the population. If omitted, the standard deviation of the given sample is used. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from e...@openoffice.org Tue Aug 25 10:28:11 + 2009 --- So, no mention of one-sided at all? Ok. We probably should change the name of the 2nd parameter from Number to mu as well. The 3rd is already named sigma. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from reg...@openoffice.org Tue Aug 25 11:05:37 + 2009 --- Yes, number is too unspecific. For the application help I have suggested mean, but mu is fine too and shorter. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from e...@openoffice.org Tue Aug 25 11:29:16 + 2009 --- In cws odff06: revision 275349 sc/source/ui/src/scfuncs.src - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from e...@openoffice.org Mon Aug 24 11:35:48 + 2009 --- @drking: if you come up with a new wording for the function wizard _within the next 2-3 days_, please don't create a new issue but add to this issue instead, I can easily change the resource in CWS odff06 as well where this patch was added. However, we'd need a separate issue for the online help. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from drk...@openoffice.org Mon Aug 24 12:50:11 + 2009 --- Regina and I are discussing this by private email and will come up with something - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from drk...@openoffice.org Sat Aug 22 21:27:20 + 2009 --- Hi Regina I think you mean 'z-score' rather than 'z-core'. For your short form version, we really should make clear that this is a sample, not the entire population. There's a real problem understanding the function, because Excel has described it incorrectly, and it also doesn't work as you might expect. So my inclination is to use more words, rather than try to be succinct. I do find the diagrams helpful for this, to highlight the difference between one-sided and one/two-tailed. I'd suggest that it's helpful to be very clear that this is not a one- or two-sided test - although I'd also be happy if we simutaneously avoided the 'one-sided' label. D - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from reg...@openoffice.org Sat Aug 22 22:33:36 + 2009 --- I think you mean 'z-score' rather than 'z-core'. Yes. I do find the diagrams helpful for this, to highlight the difference between one-sided and one/two-tailed. The diagrams in the Wiki are indeed very useful, but the function description cannot contain pictures. And the proposed 'one sided' is not exact enough, because it does not say whether P(Zz) or P(Zz) is returned. This issue is about wrong calculation. That is fixed and therefore the issue is closed. But the current help Returns the two-tailed P value of a z test with standard distribution. is wrong. We need a description, that is right in content and short enough to be shown in the function wizard. Can you make a suggestion in a new issue? It should not exceed two lines (see IPMT for a description which is too long). - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from drk...@openoffice.org Fri Aug 21 07:59:41 + 2009 --- I'm not sure that's exactly right. The p-value can refer to the value on the vertical axis, whereas it's the area (cumulative probability) that is returned. Because Excel has got their description wrong in the past (and may well still have it wrong), and because the function returns an unconventional result it might be better to be *really* clear about this, with diagrams. The stuff I wrote in 2008 is here: http://wiki.services.openoffice.org/wiki/Documentation/How_Tos/Calc:_ZTEST_function and you'd be very welcome to use it in ODFF of course - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from reg...@openoffice.org Fri Aug 21 13:49:54 + 2009 --- I'm no statistician, but what about: Calculates the probability of observing a standard normal value greater than the z-core (M-µ)/(sigma/sqrt(N)), where M is the sample mean, N the sample size, and µ and sigma the known mean and standard deviation of the population. Or as short variant: Calculates the probability of observing a value greater than the z-core. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User er changed the following: What|Old value |New value Status|NEW |RESOLVED Resolution| |FIXED --- Additional comments from e...@openoffice.org Thu Aug 20 21:12:01 + 2009 --- In cws odff06: revision 275201 sc/source/core/tool/interpr3.cxx Just to be sure: would it be correct to speak of a one-sided test in the online help, and ODFF? As in Returns the one-sided P value of a z test with standard distribution.? - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User er changed the following: What|Old value |New value Assigned to|spreadsheet |er Subcomponent|code |programming Target milestone|--- |OOo 3.2 --- Additional comments from e...@openoffice.org Mon Jul 20 10:10:18 + 2009 --- Yes, sure, sorry this patch went unnoticed. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User regina changed the following: What|Old value |New value CC|'discoleo,regina,troodon' |'discoleo,er,regina,troodo | |n' --- Additional comments from reg...@openoffice.org Fri Jul 17 21:07:55 + 2009 --- Please apply the patch. The problem here is independent from the other problems with ZTEST. OOo calculates wrong and that should be corrected. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: issues-unsubscr...@sc.openoffice.org For additional commands, e-mail: issues-h...@sc.openoffice.org - To unsubscribe, e-mail: allbugs-unsubscr...@openoffice.org For additional commands, e-mail: allbugs-h...@openoffice.org
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Wed Jun 18 11:51:44 + 2008 --- Created an attachment (id=54565) patch as proposed - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Wed Jun 18 11:52:40 + 2008 --- Created an attachment (id=54566) testcase - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User regina changed the following: What|Old value |New value Issue type|DEFECT|PATCH Subcomponent|programming |code --- Additional comments from [EMAIL PROTECTED] Wed Jun 18 11:58:21 + 2008 --- I've added a patch which changes as described by drking. I thing, that further work on ZTEST should be postponed, until the specification in ODF1.2 is finished. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Tue Jun 17 07:30:37 + 2008 --- You have a good point. http://www.coventry.ac.uk/ec/~nhunt/pottel.pdf highlights a case where Excel's STDEV falls down. In fact Calc performs correctly with that data, so it might be better to simply call STDEV within ZTEST? - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User regina changed the following: What|Old value |New value OtherIssuesDependingOnTh| |18704 is| | Keywords| |oooqa --- Additional comments from [EMAIL PROTECTED] Tue Jun 17 14:33:38 + 2008 --- Improving the statistical functions is an ongoing process. The function ZTEST should depend on NORMSDIST. Therefore NORMSDIST has to be controlled and improved first. Excel is not good for comparison because EXCEL has only 7 digit accuracy very often. Calc should give better accuracy if possible. It would be nice to get a test document, which has correct results up to 15 digits for to see how good a new implementation of ZTEST is. You will find information on Excel's ZTEST on http://office.microsoft.com/en-us/excel/HP052042111033.aspx?pid=CH062528191033 or the corresponding one for EXCEL 2007. A better place to discuss how to implement ZTEST is not this issue but the mailing list [EMAIL PROTECTED] - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Tue Jun 17 19:32:55 + 2008 --- Hi Regina Discussion moved to [EMAIL PROTECTED] - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User regina changed the following: What|Old value |New value Ever confirmed| |1 Status|UNCONFIRMED |NEW --- Additional comments from [EMAIL PROTECTED] Tue Jun 17 22:22:39 + 2008 --- If third parameter is given, result is wrong. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 08:46:58 + 2008 --- I have tested this some time ago. The results are wrong both in Calc and in Excel (although each program computes something different). I do not have the slightest idea what these programs compute. The issue is mentioned also on the draft OASIS document, and I commented on this issue on the OASIS mailing list, see section 5 in this message: http://lists.oasis-open.org/archives/office-comment/200805/msg2.html - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 09:02:32 + 2008 --- Just one notice, forgot to mention: I tested this with MS Office XP on Win2k and again with OOo-dev m19. Both results are wrong, as exemplified by comparison to R: x - c(90,95,95,100) z.test(x,100,5) One Sample z-test data: x z = -2, n = 4.0, Std. Dev. = 5.0, Std. Dev. of the sample mean = 2.5, p-value = 0.0455 alternative hypothesis: true mean is not equal to 100 95 percent confidence interval: 90.10009 99.89991 sample estimates: mean of x 95 - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 10:13:55 + 2008 --- Thanks, Leonard It's difficult to see exactly what R is calculating. I've tried to go back to basics to show that there is some logic/validity to Excel's method, and indeed that there is a clear bug with Calc, with the 3 parameter version. I've tried to get z.test to work in R but failed after a brief struggle. What happens if you set alternative (Direction of the alternative hypothesis) to 'greater', or 'less' or even 'two.sided'? I think Excel produces a 'one-sided' (not 'one-tailed') test which might correspond to 'greater'. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 11:55:29 + 2008 --- Ah, I figured how to use z.test in R (over lunch ;). Yes, it does give the same results as Excel: z.test(x,100,5,'greater') Even with the mean on the other side y-c(110,105,105,100) z.test(y,100,5,'greater') I'm now convinced that 'one-sided' is the correct description for what Excel does - not one- or two- tailed. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User regina changed the following: What|Old value |New value CC|''|'regina' --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 11:56:02 + 2008 --- adding me to cc. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 User troodon changed the following: What|Old value |New value CC|'regina' |'regina,troodon' - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 12:09:00 + 2008 --- z.test does the two-tailed test by default:- = y-c(110,105,105,100) z.test(y,100,5) One Sample z-test data: y z = 2, n = 4.0, Std. Dev. = 5.0, Std. Dev. of the sample mean = 2.5, p-value = 0.0455 alternative hypothesis: true mean is not equal to 100 95 percent confidence interval: 100.1001 109.8999 sample estimates: mean of y 105 == p-value of 0.0455 is exactly twice what Excel gives - which is right, because when the sample mean is above the population mean Excel does the one-tailed test. In summary this all hangs together. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue:
http://www.openoffice.org/issues/show_bug.cgi?id=90759
User discoleo changed the following:
What|Old value |New value
CC|'regina,troodon' |'discoleo,regina,troodon'
--- Additional comments from [EMAIL PROTECTED] Mon Jun 16 15:25:49 +
2008 ---
Well, I am glad you figured out the R-syntax. You can access the help in R
using:
help('z.test')
[or whatever command you wish to know about]
Just to remove some confusion:
1.) one sided and single-tailed are the same
[similarly 2-sided / 2-tailed are the same]
2.) statistical tests should be almost always 2-sided
[one sided tests are necessary only in rare instances]
3.) R-syntax (with default values / possible options)
z.test(x, mu = 0, stdev, alternative = c(two.sided, less, greater),
sd = stdev, conf.level = 0.95, ...)
e.g. (you can copy / paste these lines in R)
x - c(90,95,95,100)
z.test(x, mu = 100, sd = 5,'greater') # one-sided greater
z.test(x, mu = 100, sd = 5,'less') # one sided less
z.test(x, mu = 100, sd = 5,'two.sided')# two sided
z.test(x, mu = 100, sd = 5 ) # two sided by default
z.test(x, mu = 100, sd = sd(x) ) # compute the SD automatically
Just some words on using the z-test for people who did NOT figure out yet how to
do it in R:
- you need first to install the TeachingDemos:
go to the Menu: Packages - Install packages -
- select the mirror server - select TeachingDemos
- you need now to Load the package:
go to the Menu: Packages - Load package - select TeachingDemos
- Done.
I'm now convinced that 'one-sided' is the correct description for
what Excel does
Good to know, though I'll stick with R for serious statistics. ;-)
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[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 15:32:49 + 2008 --- Small corrections: [parameter 'alternative' needs to be explicitly stated, when naming all the other parameters] x - c(90,95,95,100) z.test(x, mu = 100, sd = 5, alternative = 'greater') # one-sided greater z.test(x, mu = 100, sd = 5, alternative = 'less') # one sided less z.test(x, mu = 100, sd = 5, alternative = 'two.sided')# two sided z.test(x, mu = 100, sd = 5 ) # two sided by default z.test(x, mu = 100, sd = sd(x) ) # compute the SD automatically - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 20:33:53 + 2008 --- Created an attachment (id=54518) ZTEST: one-sided or one-tailed; proposed bug fix - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 20:37:04 + 2008 --- I'm on a roll on this one... ;) Just attached a defence of my view that 'one-sided' is the correct term, plus a proposed bug fix. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 21:29:04 + 2008 --- Sneaking into the code for computing the variance/SD/SE, I noticed that Calc uses an unstable algorithm. Calc should implement either a 2 pass code, or alternatively a stable one pass algorithm. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Mon Jun 16 22:22:22 + 2008 --- My previous comment refers of course to the ztest code, the true SD-code is corrected as afr as I know. ;) - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 Issue #|90759 Summary|ZTEST not same as Excel Component|Spreadsheet Version|OOo 2.4.0 Platform|All URL| OS/Version|All Status|UNCONFIRMED Status whiteboard| Keywords| Resolution| Issue type|DEFECT Priority|P3 Subcomponent|programming Assigned to|spreadsheet Reported by|drking --- Additional comments from [EMAIL PROTECTED] Sun Jun 15 20:43:49 + 2008 --- ZTEST produces different results to Excel. Attached file has a review. - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
[sc-issues] [Issue 90759] ZTEST not same as Excel
To comment on the following update, log in, then open the issue: http://www.openoffice.org/issues/show_bug.cgi?id=90759 --- Additional comments from [EMAIL PROTECTED] Sun Jun 15 20:48:35 + 2008 --- Created an attachment (id=54497) Description of the ZTEST problem - Please do not reply to this automatically generated notification from Issue Tracker. Please log onto the website and enter your comments. http://qa.openoffice.org/issue_handling/project_issues.html#notification - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] - To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
