Paired Sample T-Test

• Assess the Normality of the two-time points in terms of variables.
  • If both data are normal then:
  • Analyze
  • Compare means
  • Paired Sample t-test
  • Input the test variable (Pre in variable 1 and post in variable 2)

Output:

• Look at the significance level.

• If the difference between pre-test and post-test are significant, then the test score is valid. i.e. t is valid at -4.123 (where post-test is higher indicated by the minus sign)