jamovi

There is controversy as to whether it is correct or not. On grounds that the ANOVA assumes equal variances, some stats programs use the same pooled error term for each test in the set of post hoc tests. In such a situation, individual t tests would usually not produce the same result as ANOVA post h...

Personally, I would use the ANOVA posthocs output table to hand-calculate each Cohen's d effect size. Specifically, I would convert each 'SE of differences' to an 'SD of differences' by by multiplying the 'SE of differences' by the square root of the number of differences. I would then divide each m...

FYI, here's handy reference: https://www.researchgate.net/publicatio ... easurement

Here's another example. It filters-out Row 2 ad Rows 5 through 7.

To add to the examples provided earlier in this thread, the following filters-out Rows 2, 5, and 7:

ROW()!=2 and ROW()!=5 and ROW()!=7

Hi. Judging from the details of your question, I don't think it's a simple matter of what test to do, or whether jamovi can do such a test. Rathe, your question pertains to the fundamental meanings and applications of the statistical terms, "reliability," "validity," and "re...

Maybe follow SPSS's lead. Instead of calling it a "continuous," or "ratio/interval" (or "rinterval") scale, SPSS calls it a "scale" scale. LOL.

Inclusion of the Ns is a good idea. But what statistic did you have in mind as an index of the effect size for a oneway Welch's (i.e., unequal-variance) ANOVA?

FYI. I see that if the t test is conducted on Z scores (standardized separately for each of the two means), the Shapiro-Wilk output is correct and is not impacted by unequal variances. I think that the algorithm should be adjusted so that, in the context of a t test, Shapiro-Wilk is conducted on the...

Yes, so regarding "they consistently utilized the chi-square value, even when calculated through Fisher's exact test (marked as a red square). However, the jamovi software does not directly calculate Fisher's test (marked as a green square)." . . . . . . jamovi does "directly" ca...