Question

note: human subjects were divided into three groups: group 1 received drug l after ceasing administration of drug e, group 2 received a placebo after ceasing administration of drug e, and group 3 did not cease administration of drug e. symptom levels were rated at baseline (bl), and at 1 and 4 weeks. a colleague compared ratings for irritability and total self - reported symptoms and concluded that subjects ratings in these categories were approximately the same. is your colleagues conclusion correct, and why? a. no, because the rating scales for these categories are different. b. no, because the lines have a different pattern. c. yes, because the rating scales for these categories are the same. d. yes, because the lines have approximately the same pattern.

Explanation:

To determine if the conclusion is correct, we need to check the consistency of the rating - scale patterns across categories. If the rating scales for different categories have different patterns, we cannot conclude that the ratings are approximately the same. Looking at the graphs, we can see that the lines for different categories do not follow the same pattern.

Answer:

B. No, because the lines have a different pattern.