An analysis of variance was used to evaluate the mean differences from a repeated-measures research study. The results were reported as F(3,24)=6.40.
a. How many treatment conditions were compared in the study?
b. How many individuals participated in the study?
4 treatment conditions
9 participants
To answer these questions, we need to decode the information provided in the notation F(3,24)=6.40.
a. The number of treatment conditions compared in the study is denoted by the first value in the parentheses, which is 3. Therefore, three treatment conditions were compared.
b. The total number of individuals who participated in the study can be determined by adding the two values within the parentheses. In this case, the values are 3 and 24. Adding them together gives a total of 27 individuals. However, it is important to note that the second value within the parentheses (24) represents the degrees of freedom for the error term or within-group variability, rather than the exact number of individuals. It is derived based on the sample size and the number of treatment conditions. So, the correct answer would be that the number of individuals who participated in the study is not explicitly provided in the given information.