he following data were collected during a study of consumer buying patterns: Observation x y Observation x y 1 19 72 8 20 77 2 21 81 9 17 73 3 43 79 10 13 77 4 28 81 11 20 85 5 56 98 12 28 93 6 49 96 13 34 94 7 32 82 14
The following data were collected during a study of consumer buying patterns:
Observation x y Observation x y
1 19 72 8 20 77
2 21 81 9 17 73
3 43 79 10 13 77
4 28 81 11 20 85
5 56 98 12 28 93
6 49 96 13 34 94
7 32 82 14
a. Obtain a linear regression line for the data.
b. What percentage of the variation is explained by the regression line?
c. Use the equation determined in part b to predict the expected value of y for x = 49.
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