Re: What is a confidence interval?

Dennis Roberts wrote: > as a start, you could relate everyday examples where the notion of CI > seems to make sense > > A. you observe a friend in terms of his/her lateness when planning to > meet you somewhere ... over time, you take 'samples' of late values ... > in a sense you have means .

Re: Biology articles ?

Voltolini wrote: > Hi, I am biologist teaching statistics for biologists and I am > > very interested in to learn more about teaching strategies > > when the students hate numbers (like biologists!). > > > > This is the second time I am requesting information > > about articles or anyother

Re: simple linear regression

James Ankeny wrote: > I have two questions regarding simple linear regression that I was hoping > someone could help me with. > > 1) According to what I have learned so far, the levels of X are "fixed," so > that only Y is the random variable ( error is random as well). My question > is, what

Re: statistical similarity of two texts

> Does anybody know where I can find program on the website which [can] > compare two texts/articles and settle whether or not they are similar > assuming any significant level. WordStat helps to measure some characteristics of texts: http://www.simstat.com Regards, kh =

Re: article on Excel errors

Gerry Dizinno wrote: > > A while back someone posted a reference to an article (actually a web site > that referenced the article) that purported to identify some serious errors > associated with the statistical functions of Excel. Look up three papers which have been previously published in th

Re: standard deviation from frequency table

Chris Chiu wrote: > > Dear friends: > > Does anyone know / remember how to obtain the standard deviation of a set > of numbers given only a frequency table? > > e.g., > xf(x) > 00.2 > 10.3 > 20.2 > 30.2 > 40.1 > > Many thanks. > Chris > calculate average value "a" ch

Re: logistic regression/error in binary variable

> >> > I have several variables (X1, X2...) measuring various traits of > >> > individuals and one variable (Y) which is binary (survived/did not > >> > survive). I would like to check if the variation in survival can be > >> > explained with Xi variables. > >> > > >> > It looks like a typical log

Re: logistic regression/error in binary variable

Rich Ulrich wrote: > > On 24 Nov 2000 04:39:38 -0800, [EMAIL PROTECTED] (Konrad > Halupka) wrote: > > > I have several variables (X1, X2...) measuring various traits of > > individuals and one variable (Y) which is binary (survived/did not > > survive). I would lik

logistic regression/error in binary vatiable

I have several variables (X1, X2...) measuring various traits of individuals and one variable (Y) which is binary (survived/did not survive). I would like to check if the variation in survival can be explained with Xi variables. It looks like a typical logistic regression problem. However it bot

Re: Percentiles

> > : Does anyone have an algorithm (computer code) for calculating percentiles. > > I found a description of such an algorithm in http://wwwdmorll.er.usgs.gov/nwis_doc/qw/qwgraph.html and implemented it in QBasic. Regards, kh DIM a(1000) FOR i = 1 TO 11: a(i) = i: n = i: NEXT: 'an example of a

Re: Question (comparing CVs)

"Conn, Judith" wrote: > > Hi! > > My question is on a test to compare CVs. The CVs are computed using the > same data but two different variance methods and I have to compare them. > Been told there is no real test and as of yet have not checked the Current > Index of Stat books but wondered if