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Chapter 14: Q 14.15 (page 561)

In Exercises 14.12-14.21, we repeat the data and provide the sample regression equations for Exercises 4.48-4.57.

a. Determine the standard error of the estimate.

b. Construct a residual plot.

c. Construct a normal probability plot of the residuals.

Short Answer

Expert verified

The standard error of the estimate is≈1.73.

Step by step solution

01

Part a Step 1 Given Information

02

Part a Step 2 Explanation

From the above Analysis of variance printout,

We haveSSE=6

df=n-2

=4-2

=2

The formula for the standard error of the estimate is given by.

se=SSEn-2

=62

=3

≈1.73

Hence, the standard error of the estimate is≈1.73.

03

Part b Step 1 Given Information

04

Part b Step 2 Explanation

It is the residual plot

05

Part c Step 1 Given Information

06

Part c Step 2 Explanation

As a result, the normal probability plot of the residuals

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In Exercises 14.12-14.21, we repeat the data and provide the sample regression equations for Exercises 4.48 -4.57.

a. Determine the standard error of the estimate.

b. Construct a residual plot.

c. Construct a normal probability plot of the residuals.

y=1.75+0.25x
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