In coordinates of Pythagoras, If we have some of positions in two coordinates pre and post mesures, is it right to make T test between X1 and X2 then Y1 and Y2, or there is another novel to get the difference between pre and post mesures as(X1,Y1) together and (X2, Y2) also.
Deborah J Hilton
I thought the t test was to measure the difference between two groups, either dependent or independent groups, I didn't know you can just use it to test significance between two points
you could look at the electronic statistical textbook, which can be found on the favourite links pages of my website
http://sites.google.com/site/deborahhilton/
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