Question

Read the following description and then complete the sentence that follows. William is packing for vacation and is wondering how many books to bring. He wants to make sure he does not run out of reading material, so he looks at his reading journal to see how many books he read on past vacations. For each vacation, he records the vacation's length (in days), x, and how many books he read, y.

The least squares regression line of this data set is: y=1.245x-3.095

If William stays on vacation for one extra day, the least squares regression line predicts that he would have read _____ additional books.
-3.095
3.095
-1.245
1.245

Answer 1

1.245