I have a list of values for a particular test and a single value from another test. How do I prove that the value for the single test is statistically significantly different or similar to the values on the list.
1) I got one suggestion that it is possible to generate a standard deviation measure for the list and then prove that the singular value is atleast two standard deviations away from my singular value of interest.
2) I got another suggestion to calculate the 5th percentile and 95th percentile of the list I have and then check to see if my value falls between the range.
I do all my stats on PRISM. I would be deeply obliged if somebody could suggest an easy way to do this comparison