A librarian collected data on the number of pages in chapters of a book. Interpret the slope and the y-intercept of the linear model. Round the slope to the nearest hundredth.

A. for every chapter of a book, there is an average of 1/10 page
B. for every chapter of a book, there is an average of 1 page
C. for every chapter of a book, there is an average of 0.1 page.
D. for every chapter of a book, there is an average of 10 pages

1 answer

The correct interpretation of the slope of the linear model is:

C. for every chapter of a book, there is an average of 0.1 page.

This means that on average, each chapter of the book is expected to contain 0.1 pages more than the previous chapter.

The y-intercept of the linear model represents the starting point of the data. Since it doesn't make sense for a chapter to have a negative number of pages, the y-intercept in this context is not meaningful.