9/24/2023 0 Comments Xlstat students![]() Setting up a Student's t-test for comparing the mean of a sample to a value We can use a t-test to determine if the difference between the average of the class and the average of all students in the county are similar or different with a risk of 5%. Descriptive statistics on the class performance can be computed using the function Descriptive Statistics. We don’t have the information about the variance of this statistic so we cannot run a z-test. ![]() We want to compare the results of those students with the county average which is 11.5. The data correspond to the mathematic grade average for the first semester of a class of 33 students. Dataset to perform a mean comparison test - either a Student's t-test or a z-test This tutorial shows how to test the difference between an observed mean and a theoretical one, using the one sample t-test and z-tests, in Excel with XLSTAT.
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