How to creat a graph with significant difference marks(asterisk) in it.
I have a data set with active/placebo sides been tested for 4 times at 0w, 4w, 8w and 12w. i want to run a t-test to see that whether each side(active and placebo) become significantly different at 4w, 8w and 12w comparing with 0w. Actually I already knew the answer by using Excel, but I want to build a graph with significant difference marks(asterisks) in it using JMP. How could I build such grap...