17.8.3 (PSS) Paired-Sample T-Test

Use this feature to determine the power of a paired-sample t-test given the sample size, or to get the sample size required to obtain a specified power for paired-sample t-test.

Generally speaking, the Power and Sample Size tools can be used in two ways: sample-size estimation and power computation. The former can be used to determine the size of the sample to ensure a certain level of power when you are designing an experiment. The latter can be used to estimate the accuracy of the result after you have conducted an experiment on a specific number of samples.

To calculate Power and Sample Size for Paired-Sample t-Test:

  1. Select Statistics: Power and Sample Size: (PSS) Paired t-Test. This opens the PSS_tTestPair dialog box.
  2. From the Calculate list, choose Power or Sample Size, then choose your remaining options.
  3. Upon clicking OK, an analysis report sheet is generated.

Topics covered in this section: