Hi all,
Apologies, I am very new with JMP and trying to learn by doing having completed some tutorials.
My question is based on a very large data set that I have mocked up below. In essence, there are Product IDs, each of which is ran on a number of tests, with each test having a number of sub-tests.
I want to create a new column which contains the mean of all repeats of each sub-test (column called subtest avg, with each relevant row containing the mean for that data set) and another column with standard deviation of the same. I tried this using the summary with grouping but the output didn't make sense to me.

Many thanks in advance