how do i measure similar groups why would a test be used to compare two sets of data do items matter when comparing a group when a r value is not considered normal the distribution for each item would be how to determine whether a two-group t test is normal can you find similarity in two different groups on data how is rating distributed? how to determine the similarity between two groups in a sample how can you determine if an analysis shows that two groups are similar how do you tell whether the two sets of data are the same why is a ratings distribution not a normal statistic why can't you determine the statistically similar distribution how to check if different data sets are similar how to check whether 2 data sets have a similar distribution what test is used to test whether a group is similar to a test group how do you know if two groups of data are similar how to determine if two groups are similar how to compare a sample of data how can one determine how many groups are in a set of data why isn't rating data normal compared to data