test scores for a random sample of eight
A corporation administers an aptitude test to all new sales representatives.
Management is interested in the extent to which this test is able to predict their
eventual success. The accompanying table records average weekly sales (in
thousands of pesos) and aptitude test scores for a random sample of eight
representatives.
TEST SCORES WEEKLY SALES
55 10
60 12
85 28
75 24
80 18
85 16
65 15
60 12
1. Plot a
2. Estimate the linear regression of weekly sales on aptitude test scores.
3. Estimate the weekly sales when test scores is 70
4. Determine the coefficient of determination
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