The article Effects of Gamma Radiation on Juvenile and Mature Cuttings of Quaking Aspen (Forest Science [1967]:

Question:

The article “Effects of Gamma Radiation on Juvenile and Mature Cuttings of Quaking Aspen” (Forest Science [1967]: 240–245) reported the following data on x = exposure to radiation (kR/6 hours) and y = dry weight of roots (mg):

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a. Construct a scatterplot for these data. Does the plot suggest that the simple linear regression model might be appropriate?

b. The estimated regression line for these data is ŷ =  127 − 6.65x and the standardized residuals are as given.

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Construct a standardized residual plot. What does the plot suggest about the adequacy of the simple linear regression model?

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Related Book For  book-img-for-question

Introduction To Statistics And Data Analysis

ISBN: 9780495118732

3rd Edition

Authors: Roxy Peck, Chris Olsen, Jay L. Devore

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