Given the following regression equation for the number of hours spent studying f

Question

Given the following regression equation for the number of hours spent studying for an exam and the grade received, how would you interpret the slope? Grade = 60.2 + 3.91Time Studying

A) Each question on the test was worth 3.91 points

B) For every additionl hour spent studying for the exam you would expect a grade improvement of 60.2 points

C) For each additional hour spent studying for the exam you would expect a grade increase of 3.91 points

D) If you study for 3.91 hours you should receive 60.2 points on the test

E) The lowest grade you can get on the test is 60.2

Explanation / Answer

Grade = 60.2 + 3.91Time Studying slope =3.91 I would interpret to mean C) For each additional hour spent studying for the exam you would expect a grade increase of 3.91 points because if Time =10, grade=60.2+39.1=99.3 time= 9, grade=60.2+35.19=95.39 which is 3.91 less than 99.3

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