What key piece is missing to this statement When using SPSS for a paired t-test, you would typically enter the scores for the same set of subjects under two different conditions into the same column, indicating the pairing. For an unpaired t-test, you would enter the scores for the two groups into separate columns. The calculations in SPSS for both tests are similar in terms of the steps you take to run the analysis and interpret the results. The main difference lies in how the data is structured and entered into SPSS, but the process of running the test and interpreting the output is largely the same