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Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 7.3 - Problem 13e
Get Full Access to Statistics For Engineers And Scientists - 4 Edition - Chapter 7.3 - Problem 13e

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# In a study of copper bars, the relationship between shear

ISBN: 9780073401331 38

## Solution for problem 13E Chapter 7.3

Statistics for Engineers and Scientists | 4th Edition

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Problem 13E

In a study of copper bars, the relationship between shear stress in ksi $$(x)$$ and shear strain in % $$(y)$$ was summarized by the least-squares line $$y=-20.00+2.56 x$$. There were a total of $$n=17$$ observations, and the coefficient of determination was $$r^{2}=0.9111$$. If the total sum of squares was $$\sum\left(y_{i}-\bar{y}\right)^{2}=234.19$$, compute the estimated error variance $$s^2$$.

Equation Transcription:

Text Transcription:

(x)

(y)

y=-20.00+2.56x

n=17

r^2=0.9111

Sigma(yi-overline{y})^2=234.19

s^2

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In a study of copper bars, the relationship between shear