Search found 288 matches
- Sat May 25, 2024 1:15 pm
- Forum: Statistics
- Topic: Comparing different percentages of a sample?
- Replies: 5
- Views: 95
Re: Comparing different percentages of a sample?
You have to do a separate Chi Square test (or alternatively, a separate binomial test) on a subset of the data that contains only the two frequencies of interest. This is illustrated in the lower half of the image, above.
- Fri May 24, 2024 5:41 am
- Forum: Statistics
- Topic: Comparing different percentages of a sample?
- Replies: 5
- Views: 95
Re: Comparing different percentages of a sample?
Hi. I believe these are the kinds of analyses you want to conduct:
- Tue May 21, 2024 4:48 pm
- Forum: Help
- Topic: Robust Anova
- Replies: 3
- Views: 122
Re: Robust Anova
Hi. In an ANOVA, each cell must include at least two cases (so that a within-cell variance can be computed). In contrast, you have one ANOVA cell in which the n is less than 2. See below.
- Mon May 20, 2024 1:56 pm
- Forum: Statistics
- Topic: Logistic regression analysis for two treatment groups and two time points?
- Replies: 13
- Views: 740
Re: Logistic regression analysis for two treatment groups and two time points?
Sounds like you need to include A vs B as a factor, *and* you need to examine the interactions of that factor with other predictors.
- Mon May 20, 2024 11:54 am
- Forum: Statistics
- Topic: Logistic regression analysis for two treatment groups and two time points?
- Replies: 13
- Views: 740
- Sat May 18, 2024 10:12 pm
- Forum: Statistics
- Topic: Logistic regression analysis for two treatment groups and two time points?
- Replies: 13
- Views: 740
Re: Logistic regression analysis for two treatment groups and two time points?
If you're not interested in comparing treatment group A to treatment group B (and if you think your audience won't be interested in that comparison either), then you could simply code the data so that there's no distinction between A and B, and do just one analysis. (Doing two separate analysis halv...
- Tue May 14, 2024 1:56 am
- Forum: Help
- Topic: jTransform long to wide results in incorrect new dataset - Help or Bug?
- Replies: 2
- Views: 391
- Mon May 06, 2024 9:06 pm
- Forum: Help
- Topic: Post hoc tests in Walrus (Robust ANOVA)
- Replies: 6
- Views: 4343
Re: Post hoc tests in Walrus (Robust ANOVA)
Oh. OK. So it looks like the other value of supp (i.e., "VC") is excluded completely from the interaction post-hoc test. So probably best to just remove the "interaction" post-hoc test table since, for whatever reason, it doesn't actually work right.
- Mon May 06, 2024 2:45 pm
- Forum: Help
- Topic: Post hoc tests in Walrus (Robust ANOVA)
- Replies: 6
- Views: 4343
Re: Post hoc tests in Walrus (Robust ANOVA)
I would also have doubts. For example, in a Walrus (bootstrap) robust ANOVA on the Tooth Growth Data, I think there should be 15 post-hoc comparison. But the output produces only 3.
- Wed May 01, 2024 2:34 pm
- Forum: General
- Topic: Reorder output
- Replies: 15
- Views: 30116
Re: Reorder output
I found a non-technical work-around: I simply include a 'table of contents' telling the reader wear to look in the numbered-but-out-of-order analyses. For example . . . RESULTS Contents Response Time General Descriptives for RT (#5) ANOVA of RT (#3) Rj planned comparisons for ANOVA of RT (#6) Accura...