An article in Wear (1992, Vol. 152, pp. 171–181) presents
Chapter 11, Problem 11E(choose chapter or problem)
An article in Wear (1992, Vol. 152, pp. 171–181) presents data on the fretting wear of mild steel and oil viscosity. Representative data follow with \(\mathrm{x}=\text{oil viscosity }\) and y=\text{wear volume }\left(10^{-4}\text{ cubic millimeters }\right).
Construct a scatter plot of the data. Does a simple linear regression model appear to be plausible?Fit the simple linear regression model using least squares.Find an estimate of \(\sigma^{2}\).Predict fretting wear when viscosity \(x=30\).Obtain the fitted value of y when \(x=22.0\) and calculate the corresponding residual.
Equation Transcription:
Text Transcription:
x=oil viscosity
y=wear volume (10^-4 cubic millimeters)
sigma^2
x=30
x=22.0
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