Question : Let’s imagine that we used a repeated measures design to study our hypothetical memory drug. For our study, we recruited five people, and we tested four memory drugs. Everyone in the study tried all four drugs and took a memory test after each one. We obtain the data below. Is the difference between groups statistically significant? =0.05
Question :
Let’s imagine that we used a repeated measures design to study our hypothetical memory drug. For our study, we recruited five people, and we tested four memory drugs. Everyone in the study tried all four drugs and took a memory test after each one. We obtain the data below.
Is the difference between groups statistically significant? =0.05
Values are in the picture below, use anova calculator.
Score is the response variable.
Subject and Drug are the factors,
Subject should be a random factor.
Subject is a random factor because we randomly selected the subjects from the population and we want them to represent the entire population. If we were to include Subject as a fixed factor, the results would apply only to these five people and would not be generalizable to the larger population.
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