Under which situation should we include an interaction term in our model? 0 The relationship between the response variable and the predictor variable changes depending on the value of a second predictor. O The response variable depends on two different predictors, but the slope for one predictor is always the same regardless of the value of the other. True or False: Adding more variables to the model always increases (or at least doesn't decrease) the value of R-squared. 0 True 0 False True or False: Adding more variables to the model always makes for a better model. 0 True 0 False