Question

the graph shows the relationship between daily caffeine consumption and resting heart rate for some adults. which phrases describe the relationship between heart rate and daily intake of caffeine? select two options. negative correlation increasing heart rate constant correlation positive correlation decreasing heart rate effects of caffeine resting heart rate (bpm) 180 160 140 120 100 80 60 40 20 1 2 3 4 5 6 7 8 9 10 total coffee intake (cups)

Explanation:

Step1: Observe the graph trend

As the total coffee intake (cups) increases, the resting heart - rate (bpm) generally increases.

Step2: Recall correlation concepts

A positive correlation exists when one variable increases as the other variable increases.

Answer:

increasing heart rate, positive correlation