Question

12
Consider an experiment in which a medical researcher wants to determine if there is a relationship in Y (pulse rate) and X1(cholesterol level), X2(weight), and X3?(age) of an individual. A sample of 50 people is taken and SSE = 25 and SST = 35.

1. Write down a first order linear model
   1. Df for Error =
   2. Df for model =
2. Write down a second order linear model
   1. Df for Error =
   2. Df for model =
3. Write down a second order linear model with interaction
   1. Df for Error =
   2. Df for model =
4. What is the correct conclusion?
   1. The model is not useful.
   2. The model is useful.
   3. The result is inconclusive.
   4. There is not enough information to draw a conclusion.

Answer 1