Question

Four individuals are given an experimental treatment for cancer. White blood count will be used as one measure of the effectiveness of the treatment. The white blood count of the four individuals is measured before the treatment, one week after the treatment, six months after the treatment, and one year after the treatment. What kind of study design is most appropriate?

a. A repeated-measures analysis of variance
b. An individual-measures analysis of variance
c. A repeated-measures t test
d. An individual-measures t test

Answer 1

a. A repeated-measures analysis of variance

Explanation:

Repeated-measures analysis of variance: In statistics or research methods, the term "repeated-measures analysis of variance" is also denoted as "repeated-measures ANOVA", and is described as one of the members of the "ANOVA family". However, each ANOVAs tends to compare one or more than one "mean scores" with each other and is considered as tests associated with the difference in different mean scores. Therefore, a "repeated-measures ANOVA" consists of at least one "dependent variable" that encompasses more than one "observation".

In the question above, the given statement represents a repeated-measures of analysis of variance.