[no subject]
unsubscribe edstat-l Jineshwar Singh Business Department George Brown College St .James campus [EMAIL PROTECTED] * You cannot control how others act but you can control how you react. 416 -415-2089 http://www.gbrownc.on.ca/~jsingh = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =
formula for percentile in Excel 2000
I would like to know the formula used in Microsoft Excel to compute the percentiles. Thanks, Jineshwar Singh = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =
Number of classes.
To determine the number of classes for a histogram, Excel uses square root of the number of observations. Is it also true for the number of observations greater than 200, say, for 2000?. Does the MINITAB use the same for determining the number of classes for a histogram? Any help would be appreciated. = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =
Re: common mistakes in statistics
Flaws and fallacies in Statistical Thinking by Stephen K. Cambell also discusses some aspects of statistical abuses. Jineshwar Singh, Coordinator, IDS Interdisciplinary Department George Brown College St .James campus [EMAIL PROTECTED] * You cannot control how others act but you can control how you react. 416 -415-2089 http://www.gbrownc.on.ca/~jsingh - Original Message - From: Conn, Judith <[EMAIL PROTECTED]> To: 'Dalby, James' <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, December 07, 2000 8:15 AM Subject: RE: common mistakes in statistics > I don't know about the literature but there is a book entitled, "How to lie > with Statistics" that is helpful for the lay person. > > Judy Conn > Statistician > CDC?NCIPC > > -Original Message- > From: Dalby, James [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, December 06, 2000 8:43 PM > To: '[EMAIL PROTECTED]' > Subject: common mistakes in statistics > > > > Does anyone on the list know of any books or articles describing the most > common statistical mistakes in the scientific literature? I am particularly > interested in statistical errors in the ecological literature, but am open > to information on errors in other literature too. I seem to remember > someone on the list raising this topic several months ago, but > unfortunately, I did not save the related e-mail messages. Thank you. > > > Dr. James E. Dalby, Jr., Biometrician > BC Ministry of Environment, Lands & Parks > Nanaimo, British Columbia > CANADA, V9T-6J9 > Phone: (250) 751-7246, Fax: 751-3103 > [EMAIL PROTECTED] > http://www.gov.bc.ca/elp/ <http://www.gov.bc.ca/elp/> > > "The best thing about being a statistician is > that you get to play in everyone's backyard". > --- John W. Tukey (American statistician, 1915-2000) > > > > > = > Instructions for joining and leaving this list and remarks about > the problem of INAPPROPRIATE MESSAGES are available at > http://jse.stat.ncsu.edu/ > = > = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =
standard error of the stimate: regression
I am aware that the standard error of the estimate (regression line) cannot be used as an absolute measure of a single model utility. Is there any guideline about its value? The ratio of standard error of the estimate and the average of y values does help to decide when we evaluate more than one model. Is there any particular value of this ratio that can be used ? Any help will be appreciated. Jineshwar Singh, Coordinator, IDS Interdisciplinary Department George Brown College St .James campus [EMAIL PROTECTED] * You cannot control how others act but you can control how you react. 416 -415-2089 http://www.gbrownc.on.ca/~jsingh = Instructions for joining and leaving this list and remarks about the problem of INAPPROPRIATE MESSAGES are available at http://jse.stat.ncsu.edu/ =
Re: VIF
--- "T.S. Lim" <[EMAIL PROTECTED]> wrote: > In article <000701bfca86$f831b9a0$047c6395@sprint>, > [EMAIL PROTECTED] > says... > >Simple answer-- from a college level text book. Jin > >It is 10. I hope, you are talking about Variance > Inflation Factor. More > than > >10 indicates severe multicollinearity. > > > And where does this magic number come from? :) > > > >Jin > > > >Jineshwar Singh, Coordinator, IDS > >Interdisciplinary Department > >George Brown College > >St .James campus > >[EMAIL PROTECTED] > >* > >You cannot control how others act but you can > >control how you react. > >416 -415-2089 > >http://www.gbrownc.on.ca/~jsingh > > > >- Original Message - > >From: Karen Scheltema <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Tuesday, May 30, 2000 4:51 PM > >Subject: VIF > > > > > >> What is the usual cutoff for saying the VIF is > too high? > >> > >> Karen Scheltema, M.A., M.S. > >> Statistician > >> HealthEast > >> 1700 University Ave W > >> St. Paul, MN 55104 > >> (651) 232-5212 fax: (651) 641-0683 > > -- > T.S. Lim > [EMAIL PROTECTED] > www.Recursive-Partitioning.com > __ > Get paid to write a review! > http://recursive-partitioning.epinions.com > > > > === > This list is open to everyone. Occasionally, less > thoughtful > people send inappropriate messages. Please DO NOT > COMPLAIN TO > THE POSTMASTER about these messages because the > postmaster has no > way of controlling them, and excessive complaints > will result in > termination of the list. > > For information about this list, including > information about the > problem of inappropriate messages and information > about how to > unsubscribe, please see the web page at > http://jse.stat.ncsu.edu/ > === > > > = J. Singh I.D.S George brown College [EMAIL PROTECTED] www.gbrownc.on.ca/~jsingh __ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/ === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: VIF
--- "Donald F. Burrill" <[EMAIL PROTECTED]> wrote: > On 31 May 2000, Vmcw wrote: > VIF=10 is based on empirical data. > > >>It is 10. I hope, you are talking about Variance > Inflation Factor. > > >>More than 10 indicates severe multicollinearity. > > Thus spake Jin Singh. And someone else (was it Dave > Heiser?) retorted, > sensibly I thought, > > > >And where does this magic number come from? :) > > To which Tom in PA replied (possibly > tongue-in-cheek?), > > > Neter, Wasserman, Nachtsheim, and Kutner, of > course! (or is it Wasserman, > > Kutner, Neter, and Nachtsheim or one of the other > 22 permutations?). > > I've heard of a Wasserman (or Wassermann?) test, but > didn't think it had > to do with VIF. Dunno about all those other blokes. > But apart from > argument by Appeal to Irrelevant Authority at > HeadQuarters, was there > actually some _reasoning_ underlying the selection > of VIF = 10, or was > it just someone's arbitrary guess (like the 10 > subjects per variable one > is supposed to have before one dares essay a factor > analysis)? > -- Don. > > > Donald F. Burrill > [EMAIL PROTECTED] > 348 Hyde Hall, Plymouth State College, > [EMAIL PROTECTED] > MSC #29, Plymouth, NH 03264 > 603-535-2597 > 184 Nashua Road, Bedford, NH 03110 > 603-471-7128 > > > > === > This list is open to everyone. Occasionally, less > thoughtful > people send inappropriate messages. Please DO NOT > COMPLAIN TO > THE POSTMASTER about these messages because the > postmaster has no > way of controlling them, and excessive complaints > will result in > termination of the list. > > For information about this list, including > information about the > problem of inappropriate messages and information > about how to > unsubscribe, please see the web page at > http://jse.stat.ncsu.edu/ > === > > > = J. Singh I.D.S George brown College [EMAIL PROTECTED] www.gbrownc.on.ca/~jsingh __ Do You Yahoo!? Send instant messages & get email alerts with Yahoo! Messenger. http://im.yahoo.com/ === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: VIF
It is 10. I hope, you are talking about Variance Inflation Factor. More than 10 indicates severe multicollinearity. Jin Jineshwar Singh, Coordinator, IDS Interdisciplinary Department George Brown College St .James campus [EMAIL PROTECTED] * You cannot control how others act but you can control how you react. 416 -415-2089 http://www.gbrownc.on.ca/~jsingh - Original Message - From: Karen Scheltema <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, May 30, 2000 4:51 PM Subject: VIF > What is the usual cutoff for saying the VIF is too high? > > Karen Scheltema, M.A., M.S. > Statistician > HealthEast > 1700 University Ave W > St. Paul, MN 55104 > (651) 232-5212 fax: (651) 641-0683 > > > Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com > > > > === > This list is open to everyone. Occasionally, less thoughtful > people send inappropriate messages. Please DO NOT COMPLAIN TO > THE POSTMASTER about these messages because the postmaster has no > way of controlling them, and excessive complaints will result in > termination of the list. > > For information about this list, including information about the > problem of inappropriate messages and information about how to > unsubscribe, please see the web page at > http://jse.stat.ncsu.edu/ > === > === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
Re: Cumulative Frequency Polygons a right way?
Steve, Your interpretation is right because the coordinates of the ogive (graph of cumulative frequency/ relative cumulative frequency)) indicate " less than the upper limit". Jin Jineshwar Singh, Coordinator, IDS Interdisciplinary Department George Brown College St .James campus [EMAIL PROTECTED] * You cannot control how others act but you can control how you react. 416 -415-2089 http://www.gbrownc.on.ca/~jsingh - Original Message - From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, May 22, 2000 2:08 AM Subject: Cumulative Frequency Polygons a right way? > Hi all, > > First up, the purpose I have at hand is to make interpolations for > percentages of students who have achieved above a certain score on a > test (where this score may lie between two discrete score points on the > scale). > > It seems to me cumulative frequencies should be plotted at the exact > upper limit of each interval. This is the only simple method that > makes sense to me. > > However, it has been suggested by others in the context I'm dealing > with that frequencies/percentages can alternatively be plotted at the > mid-point of each interval, or even at the lower limit! Although I can > understand plotting graphs at the mid-point for ease of representation, > this hardly seems suited to making interpolations. This is because > when you read off the graph at the upper limit of a given interval, you > will (probably) have more cases than fell up to and including the > interval itself. This is surely absurd, yet people seem to seriously > believe it is a viable alternative. > > I'm really hoping for a good reference on this (preferably by a highly > regarded author to make the case stronger :). Any comments, or refs? > > Thanks! > > Steve. > > > Sent via Deja.com http://www.deja.com/ > Before you buy. > > > === > This list is open to everyone. Occasionally, less thoughtful > people send inappropriate messages. Please DO NOT COMPLAIN TO > THE POSTMASTER about these messages because the postmaster has no > way of controlling them, and excessive complaints will result in > termination of the list. > > For information about this list, including information about the > problem of inappropriate messages and information about how to > unsubscribe, please see the web page at > http://jse.stat.ncsu.edu/ > === > === This list is open to everyone. Occasionally, less thoughtful people send inappropriate messages. Please DO NOT COMPLAIN TO THE POSTMASTER about these messages because the postmaster has no way of controlling them, and excessive complaints will result in termination of the list. For information about this list, including information about the problem of inappropriate messages and information about how to unsubscribe, please see the web page at http://jse.stat.ncsu.edu/ ===
free math web site
I am looking for free web sites for math up to grade 12 level. if you are aware of any, please let me know the URL Thanks Jin Jineshwar Singh, Coordinator, IDSInterdisciplinary DepartmentGeorge Brown CollegeSt .James campus[EMAIL PROTECTED]416 415-269-6320http://www.gbrownc.on.ca/~jsingh
