Question: For interval*interval interaction models: (a) How do you interpret the coeffi cients in a model with an interaction between two interval variables (the intercept, the

For interval*interval interaction models:

(a) How do you interpret the coeffi cients in a model with an interaction between two interval variables (the intercept, the coeffi cient for each of the predictor variables and the coeffi cient on the product term)?

(b) How would you write conditional regression equations (holding one variable constant at a particular value) based on the interval by interval interaction model?

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