CAS Exam MAS-II Fall 2019, Question 8
Study guide: Exam MAS-II
You are given the following statements are true regarding the variance-covariance \mathbf{D} matrix relating the random effects in a Linear Mixed Model:
I. The matrix is always symmetrical. II. All elements of the matrix must be non-negative. III. Under the compound symmetry structure, all the elements along the diagonal of the matrix are equal.
Determine which of the above statements are true.
- A) None of I, II, or III is true
- B) I and II only
- C) I and III only
- D) II and III only
- E) The answer is not given by (A), (B), (C), or (D)
Answer this question and see the worked solution