Question

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were...

The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 20 students in a beginning computer-science course. The results were as follows.

x 5 15 21 12 23 22 14 19 18 17 19 18 7 5 6 21 19 10 18 13
y 19 19 24 36 27 26 25 28 17 27 21 24 18 18 14 28 21 22 20 21

(a) Find the equation of the line of best fit. (Round your slope to four decimal places and your y-intercept to three decimal places.)
=  +  x

(b) Find se2. (Round your answer to two decimal places.)

Homework Answers

Answer #1

The statistical software output for this problem is:

From above output:

a) y = 16.771 + 0.396 x

b) se2 = 21.34

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