The standard error of the mean of difference scores could be ...

[HCHenry]

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.

Question 2

Which of the following is sometimes a serious problem with repeated measures designs?
 
  a. Carryover effects can cloud the interpretation.
  b. Small sample sizes can distort the results more than with other designs.
  c. They require more subjects than designs with independent samples.
  d. all of the above

[peilian]

Answer to Question 1

C

Answer to Question 2

A

[HCHenry]

TYSM

[duy1981999]

Thanks for the timely response, appreciate it