Question

The following data are quiz scores for two quizzes from 8 students in a class. First...

The following data are quiz scores for two quizzes from 8 students in a class.

First Quiz Second Quiz
16 11
19 14
23 17
32 27
36 28
37 31
38 33
40 40


Least-squares Regression Line

What is the least-squares regression line? Round to three decimal places.

ˆy=


Prediction

Predict the score of the second quiz if a student scored 39 on the first quiz. Round to one decimal place.

  

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

Solution:

Given that regression equation

y = -6.558 + 1.052

Predict the score of the second quiz if a student scored 39 on the first quiz.

y = -6.558 + 1.053*39

= -6.558 + 41.067

= 34.509

= 34.5

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