Question

Dr. Carson is conducting a study on how exercise regimes A, B, and C affect weight change in obese adolescents. She also wants to include the age of teenagers as an additional factor. How would she design the study to incorporate both exercise regimes and age as variables? Explain the design.

Answer 1

Dr. Carson can use a factorial design to study the impact of exercise regimes A, B, and C on weight change in obese adolescents, while also considering the age of the teenagers as an additional factor.

Step-by-step explanation:

Dr. Carson can design the study by including exercise regimes A, B, and C as the main independent variable and age as an additional independent variable. To incorporate both variables, she can use a factorial design, where each combination of exercise regime and age is tested.

For example, she can have three groups: Group 1 doing regime A with teenagers aged 13-15, Group 2 doing regime B with teenagers aged 13-15, and Group 3 doing regime C with teenagers aged 13-15.

Then, she can repeat the same groups but with teenagers aged 16-18. This design allows Dr. Carson to analyze the main effects of exercise regimes and age, as well as any potential interactions between them.