Dummy variables take on the values of and are used to model

Dummy variables take on the values of _________ and are used to model the effects of different levels of qualitative variables.

1 or 1

1 or 2

0 or 2

0 or 1

Solution

dummy variable have values 0 and 1 that is y no other values is used by them.

hence the answe will be option D.