Repeated measures Flashcards
what test do we use for a parametric repeated measures
paired samples t-test
what does the t test compare
the IV1 frequency distribution if the DV to the IV2 frequency distribution of the DV
degrees of freedom for a t-test
n - 1
when is t significant at 0.05
if its > 0.05
when is t significant at 0.010
if its >0.010
when is t highly significant
> .001
what do you need to state when reporting t test in APA format
IV mean and SD
what test do you use for a non-parametric repeated measures test
wilcoxon signed ranks test for paired samples
what does a wilcoxon assess
whether the population ranks differ
when is a wilcoxon not suitable
for high alpha if N is less or equal to 10
how do you work out t statistic in wilcoxon
1) add ranks with positive difference
2) add ranks with negative difference
3) smallest sum is the t value
when is t significant in a willcoxon
when its smaller than the critical value
what do you need to include when writing up wilcoxon in apa format
median and IQR
what does the t value tell is
that there is a difference NOT how big the difference is
when would you need to standardize a t score (wilcoxon)
if N>25
