Re: If T-Test can not be applied

such as the Wilcoxon Rank Sum Test or the equivalent Mann Whitney U Test. You could also consider resampling or permutation tests... WBW __ William B. Ware, Professor and Chair Educational Psychology, CB# 3500

Re: If T-Test can not be applied

Excuse the bad grammar or typo noted below... It's been a long morning already, and it's still not 9 am... :) Bill On Fri, 15 Feb 2002, William B. Ware wrote: What are your samples sizes? If there are equal or nearly so, the t-test *they* is robust

Re: ranging opines about the range

the high end of its value... Sort of a maximum range... I prefer not including the additional one unit... Bill __ William B. Ware, Professor and Chair Educational Psychology, CB# 3500

Re: What is a confidence interval?

Have you tried simulations? with something like Resampling Stats or Minitab? WBW On 26 Sep 2001, Warren wrote: Hi, I've been teaching an introductory stats course for several years. I always learn something from my students...hope they learn too. One thing I've learned is that confidence

Re: for students (biology et al.) that hate numbers

__ William B. Ware, Professor and Chair Educational Psychology, CB# 3500 Measurement, and Evaluation University of North Carolina PHONE (919)-962-7848 Chapel Hill, NC 27599-3500 FAX: (919)-962

Re: Ninety Percent above Median

Could it be that it was more like Ninety percent of the students in District X were above the national median? WBW __ William B. Ware, Professor and Chair Educational Psychology, CB# 3500

Re: Post-hoc comparisons

protection with greater power than a "pure" Bonferroni approach... WBW ______ William B. Ware, Professor and Chair Educational Psychology, CB# 3500 Measurement, and Evaluation

RE: Q-techniques

Also of interest are the writings of R.B. Cattell from the '50s and '60s. There is a nice discussion of his "data box" in the first Handbook of Multivariate Statistics, published in the mid '60s. Bill ______ Willi

Re: zero variance in a pair of ANOVA means

of variance. ANOVA is robust against such violations when the cell sizes are equal... WBW __ William B. Ware, Professor and Chair Educational Psychology, CB# 3500 Measurement

Re: NY Times on statisticians' view of election

__ William B. Ware, Professor and Chair Educational Psychology, CB# 3500 Measurement, and Evaluation University of North Carolina PHONE (919)-962-7848 Chapel Hill, NC 27599-3500 FAX: (919

Re: tails and tests

d... Bill ______ William B. Ware, Professor and Chair Educational Psychology, CB# 3500 Measurement, and Evaluation University of North Carolina PHONE (919)-962-7

Re: Need help - Shapiro-Wilk's W test...

If the p-level is below your "predetermined" level of significance, then you would reject the null hypothesis that the data are a sample from a normally distributed population... WBW ______ William B. Ware, Professor

Re: Shapiro-Wilks

Good points by Karl... It does not tell you how it might depart from normality... you should also look at measures of skewness and kurtosis, as well as graphic plots... q-q plots and histograms... WBW On Tue, 6 Jun 2000, Karl L. Wuensch wrote: Do not, however, assume that this

Re: Unbalance Nested (Hierarchical) Design

Regading the expected mean squares, see books on experimental design by Kirk, Winer, or Keppel. WBW __ William B. Ware, Professor and Chair Educational Psychology, CB# 3500