Calculating CIs using SPSS
  1. Open your SPSS file.
  2. Click on Analyze.
  3. Click on Compare Means .
  4. Click on 1-Sample T Test .
  5. Highlight the variable(s) of interest (TV network, Weekday Bedtime, and Weekend Bedtime).
  6. Click the arrow (red arrow below) to slide them across the dialog box.
  7. Click the Options button (green arrow above).
  8. Enter the value for the CI you wish SPSS to calculate (e.g., 95%).
  9. Click Continue, then click OK.
  10. Note the upper and lower boundaries of your confidence interval.
  11. You can then cut and paste the table into Word as before.