Question

based on the scatterplot, what is the best prediction of the resting heart rate, in beats per minute, of a person who exercises an average of 8 hours each week?
a 30 beats per minute
b 50 beats per minute
c 55 beats per minute
d 60 beats per minute

Explanation:

Step1: Locate x - value on scatter - plot

Locate \(x = 8\) (average weekly exercise hours) on the \(x\) - axis.

Step2: Estimate corresponding y - value

Move vertically from \(x = 8\) to the approximate position of the data points. Observe that the \(y\) - value (resting heart rate) is closest to \(55\).

Answer:

C. 55 beats per minute