The correlation coefficient r between a child age x and the number of minutes spent doing homework each day y is 0.694.

what percent of the variation?

a. 30.6%
b. 48.2%
c. 51.8%
d. 69.4%

The answer is 48.2%

Step-by-step explanation:

The correlation coefficient r between a child age x and the number of minutes spent doing homework each day y is 0.694 i.e r=0.694

Now, we have to find percent of the variation.

The coefficient of determination is

The square of r(correlation coefficient) is the percent of variation that is explained by the dependent variable.

If r=0.694 ⇒ this means that 48.2% of variation in dependent variable.

answer: idk

step-by-step explanation: