A Sociologist Is Interested in How Family Income (In 1,000s

Multiple Choice

A sociologist is interested in how family income (in 1,000s of dollars) predicts number of books in the home. He produces a regression equation stating that Y = 50 + 0.25(X) .
-Which of the following would be an accurate interpretation of this finding?

A) For each additional $1,000 of income, families have an average of 50 additional books.
B) For each additional $50 of income, families gain an average of 0.25 extra books.
C) For each additional 0.25 books, families have an extra $50.
D) For each additional $1,000 of income, families have an average of 0.25 additional books.