what type of test is the levene test what is the appropriate method to compare two means when data is nonnormal, sample size is different and variance seems equivalent? what is the appropriate method to compare two medians if data is nonnormal what tests are used to compare two means which test is more appropriate for comparing mean means of a data set which test is most appropriate to compare two mean means when data are nonnormal? what test is used to compare mean of two groups what is the appropriate method to compare two means when data is nonnormal what statistical test is appropriate to compare means difference between wilcoxon and shabero-wilk test what tests are used to compare a mean what is the appropriate method to compare two means if data is nonnormal, sample size is different and variance appears equivalent? what is the wilcoxon test for mean variance when to use Shapiro-Wilk for comparing two means what is the appropriate method to compare two means if data is nonnormal, sample size is different and variance seems equivalent? what is the appropriate method to compare two means when data is nonnormal and sample size is different and variance seems equivalent? what is the appropriate method to compare two means when data is nonnormal? average p values for n and equal variance what is the appropriate method to compare mean if data are nonnormal and sample size is different? if a sample size is not normal what test is used to compare the two means