Concept explainers
(a)
To find and interpret: the value of
(a)
Answer to Problem 49E
An
Explanation of Solution
Given:
Mean | Standard deviation | |
Wife’s height | ||
Husband’s height |
Calculation:
For these data:
In regression,
Conclusion:
Hence, here the value is 0.25; this shows regression line does not fit accurately the data
(b)
To explain:the value of the standard deviation
(b)
Answer to Problem 49E
The standard deviation of the residuals s measures the average size of the prediction errors (residuals) when using the regression line. The value
Explanation of Solution
For these data the standard deviation of the residuals is
The standard deviation of the residuals s measures the average size of the prediction errors (residuals) when using the regression line.The value
Chapter 3 Solutions
The Practice of Statistics for AP - 4th Edition
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