Concept explainers
To find: points above the class mean
Answer to Problem 52E
It is predicted that 4.1 points above the class mean he will score on the final.
Explanation of Solution
Given:
The least squares line is
Octavio scores 10points above the class mean
Calculation:
The least squares line for predicting final exam scores from midterm exam score was
Octavio scores 10 points above the class mean on the midterm,
That is
Predicted final score exam is
The fact that is used is that the least-squares line passes through
Conclusion:
Hence, it is predicted that 4.1 points above the class mean he will score on the final.
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