Comparing means using different methods give different results
Hi all, I have a quick question about comparing means in JMP 15. My data is composed of two variable:the independent variable is an ordinal variable with four levels (high, medium, low and very low), while the dependent variable is continuous. I want to compare means for four groups (high, medium, low, and very low) to see if there is a statistical difference between them or not. when I used (All...