How to creat a graph with significant difference marks(asterisk) in it.

[#1]

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 graph using my data set? I have also attached 1) the data table that I have; 2) what the expected graph should look like. You may notice that the data table is different than usual because I have listed the repeatedly measured data on different columns. So please also tell me that how could I build the graph using exactly the data table I have without combing several columns into one. Thanks!

[#2]

Hi, 

Assuming that you are working with GraphBuilder, you can add short scripts to the graph using the Customize option in the menu (right-click on the chart).

The base function you want to use in this case is: Text (center justified, {x,y}, "TEXT") where {x,y} represents the coordinates for the center of the "TEXT", and TEXT in your case would be "*", "**", or "***".

You can format the TEXT by preceding the function with:

• Text Size (n), where n is the character size
• Text Color ("red")

If you have many plots to draw, you could look into developing a more sophisticated script where the position and number of asterixes could be dynamically assigned based on column values. 

Best,

TS