The Following Is Part of the Printout from an SPSS

Multiple Choice

The following is part of the printout from an SPSS analysis of data on paired samples.  Use it to answer the next several questions.

The standard error of the mean of difference scores could be calculated by

A) taking the standard deviation of the differences.
B) repeating the study many times and looking at the distribution of means.
C) dividing the standard deviation of difference scores by the square root of the sample size.
D) looking at the standard deviation of the posttest scores.