The Three-Factor Fixed Effects Model, with the Same Number of Observations

question 13

Multiple Choice

The three-factor fixed effects model, with the same number of observations for each combination of levels I, J, and K of the three factors A, B, and C, respectively, is represented by . Which of the following statements are true?

• A) The restrictions necessary to obtain uniquely defined parameters are that the sum over any subscript of any parameter on the right-hand side of the above equation equals 0.
• B) The parameters \(\alpha _ { i } ^ { \prime } s , \beta _j ' s , \text { and } \delta _ { k} ^ { \prime } s\) Are called the main effects of the factors A, B, and C, respectively.
• C) The parameters Are called two-factor interactions.
• D) The parameter Is called a three-factor interaction.
• E) All of the above statements are true.