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The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points.
For about 95% of the students, the regression estimate of final score based on midterm score is correct to within ___________ points.

Question

Plz 5 minutes left
The scatter diagram of midterm scores and final scores in a large class is football shaped. For about 80% of the students, the regression estimate of final score based on midterm score is correct to within 15 points.
For about 95% of the students, the regression estimate of final score based on midterm score is correct to within ___________ points.

directrix · Answer

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