Dear all, how to conduct significant test for 3 group categorical data and ordinal varibales? i have student grade 1, 2 and 3, label as 1-2-3, and asking theri perception on study with likertscale 0-4 (completely disagree to completely agree). what way is best to conduct significant test compare the 3 groups of student? Chisquare? Thansk very much in advance!