When using best subsets regression with a model that has four independent variables, a total of different combinations of regression models will be considered. a. 4
b. 15
c. 12
d. 18

b. 15

Step-by-step explanation:

Given that:

There are 4 independent variables, then the subset regression total is 2⁴ = 16 attainable regression model.

However, out of these 16 regression models, 1 Model contains no predictors which only intercept 3 Model with , 3 Model with. and 1 Model which comprises all the independent variables.

Therefore, when applying best subsets regression with a model that possesses four (4) independent variables, the number of different combinations of regression models that can be considered is 15.

answer: there are 453.592 grams in a pound.

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