Consider Model 1: Linear model and Model 2: Random intercept model and the data

Question

Consider Model 1: Linear model and Model 2: Random intercept model and the data is children who have a disease. We are testing 4 children and we test each child 3 times over two years.

a. Which model assumes independence for all of its data points (all 12 data points from table)?

i .Model 1

ii. Model 2

iii. Both

iv. Neither

b. Which model accounts for repeated observation from the subjects?

i. Model 1

ii. Model 2

iii. Both

iv. Neither

c. Why do we sometimes observe opposite conclusions from the two models?

Explanation / Answer

a. Which model assumes independence for all of its data points (all 12 data points from table)?

Answer : Model 1

b. Which model accounts for repeated observation from the subjects?

Answer : Both

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