One-Sample T Test Options

Confidence Interval. By default, a 95% confidence interval for the difference between the mean and the hypothesized test value is displayed. Enter a value between 1 and 99 to request a different confidence level.

Missing Values. When you test several variables, and data are missing for one or more variables, you can tell the procedure which cases to include (or exclude).

  • Exclude cases analysis by analysis. Each t test uses all cases that have valid data for the tested variable. Sample sizes may vary from test to test.
  • Exclude cases listwise. Each t test uses only cases that have valid data for all variables that are used in any of the requested t tests. The sample size is constant across tests.

Specifying Options for a One-Sample T Test

This feature requires the Statistics Base option.

  1. From the menus choose:

    Analyze > Compare Means > One-Sample T Test...

  2. In the One-Sample T Test dialog box, click Options.