T Test Correlation Table. Sample mixed methods table. Pcrit n α tails the critical value of the t test for pearson s correlation for samples of size n for the given value of alpha default 05 and tails 1 one tail or 2 two tails the default.
Computational formula for paired samples t test calculation of the se d for the correlated samples t test requires finding the pearson product moment correlation r 12 between the two sets of scores. Note that this is not the apa format for presenting the results of a t test. If the calculated pearson s correlation coefficient is greater than the critical value from the table then reject the null hypothesis that there is no correlation i e.
The column header are the t distribution probabilities alpha.
Sample qualitative table with variable descriptions. If this is not true the conclusions may well be invalidated. The test statistic t has the same sign as the correlation coefficient r. A table of such critical values can be found in pearson s correlation table.
