Author Question: If two dummy-coded variables were used to create an interaction term for multiple regression, which ... (Read 28 times)

Charlie · **on:** Jul 8, 2018

If two dummy-coded variables were used to create an interaction term for multiple regression, which of the following would be true?

a. The two original dummy-coded variables could be omitted from the analysis
b. Codes for the interaction term would be either 1 or -1
c. Codes for the interaction term would be either 1 or 0
d. There would be a minimum of four predictors in the analysis

Question 2

Individuals who have impaired cognitive ability but who can understand some aspects of participation in a research study may indicate agreement to participate in the study by:

A) signing the informed consent
B) giving their assent
C) being coerced to participate
D) none of the above