Two radon detectors were placed in different locations in
Chapter 7, Problem 10E(choose chapter or problem)
Two radon detectors were placed in different locations in the basement of a home. Each provided an hourly measurement of the radon concentration, in units of pCi/L. The data are presented in the following table.
a. Compute the least-squares line for predicting the radon concentration at location 2 from the concentration at location 1.
b. Plot the residuals versus the fitted values. Does the linear model seem appropriate?
c. Divide the data into two groups: points where \(R_1<4\) in one group, points where \(R_1 \geq 4\) in the other. Compute the least-squares line and the residual plot for each group. Does the line describe either group well? Which one?
d. Explain why it might be a good idea to fit a linear model to part of these data, and a nonlinear model to the other.
Equation Transcription:
Text Transcription:
R_1
R_2
R_1
R_2
R_1
R_2
R_1
R_2
R_1<4
R_1{>=}4
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