Answer
The coefficient of determination is $r^{2}$, which is the square of the linear correlation coefficient r
$r^{2} = (0.217)^{2} = 0.047 = 4.7$%
This indicates that 4.7% of the variation of food intake at age 55 has been explained by the food intake at age 18, which is very small. Hence, the correct option is:
d.
Work Step by Step
The coefficient of determination is $r^{2}$, which is the square of the linear correlation coefficient r
$r^{2} = (0.217)^{2} = 0.047 = 4.7$%
This indicates that 4.7% of the variation of food intake at age 55 has been explained by the food intake at age 18, which is very small. Hence, the correct option is:
d.
