The hours of preparation (Prep) and exam scores (Exam) of four students are given below:

Prep Exam 1 70 3 80 1 80 3 90

(A) Calculate the values of ˆ

0 and ˆ

1 so that ei 2

is minimized for exami = ˆ + ˆ prep + e 0 1 i i

(B) Interpret the values you obtained.

(C) Sketch the ordinary least squares line in the graph.

Transcribed Image Text:

exam 100 90 80 70 60 0 1 2 3 4 prep