Polynomial Regression Flashcards
1
Q
Centre the predictor variable
A
(cx) subtracting the mean of the predictor variable from each value of the predictor variable. Allowing for more stable model fitting.
2
Q
Difference of polynomial regression to multiple regression.
A
Polynomial regression is fitting of a curved line model to a dataset with only 1 type of predictor variable. Compared to fitting a line to multiple predictor values.