EBK INTRODUCTION TO THE PRACTICE OF STA
EBK INTRODUCTION TO THE PRACTICE OF STA
8th Edition
ISBN: 9781319116828
Author: Moore
Publisher: VST
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Chapter 2.4, Problem 84E

(a)

To determine

To graph: The time plot (scatterplot) of mean scores versus time.

(b)

Section 1:

To determine

To find: The mean, standard deviation and correlation of the two variables (time and scores).

Section 2:

To determine

To find: The least-square regression equation of the line.

Section 3:

To determine

To graph: The regression equation line on the scatter plot.

Section 4:

To determine

To find: The percentage of time variation in the scores explained by the linear trend.

(c)

To determine

To test: Whether the regression line in parts (a) and (b) are matched with the regression line obtained by using software.

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Chapter 2 Solutions

EBK INTRODUCTION TO THE PRACTICE OF STA

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