Which of the following would require a repeated-measures analysis of variance? i

Question

Which of the following would require a repeated-measures analysis of variance?

i. An experimental study in which the researcher manipulates an independent variable to create two or more treatment conditions, with the same group of individuals tested in all of the conditions

ii. A nonexperimental study in which the same group of individuals is simply observed at two or more different times

iii. An experimental study in which the researcher applies the same treatment to two different groups of individuals

a. I only

b. I and II only

c. III only

d. I, II, and III

Explanation / Answer

Answer: b. I and II only

Repeated measures ANOVA is used when same subjects take part in an experiment or observational study and are tested or observed in 2 or more conditions.

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