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Greeley [361]
4 years ago
12

The correlation coefficient (r) between the number of hours worked x and the amount of money earned y is 0.456 what percent of t

he variation in the amount of money earned can be explained by differences in the number of hours worked
A :79.2%
B:54.4%
C:45.6%
D:20.8%
Mathematics
1 answer:
Hoochie [10]4 years ago
3 0
The percent of the variation in the dependent variable that can be explained by the independent variable is called coefficient of determination, which is r^2. In this case, r = 0.456. So r^2 = 0.456^2 = 0.208. That means 20.8% of the variation in the amount of money earned can be explained by differences in the number of hours worked. 
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