Question

the graph shows the relationship between daily caffeine consumption and resting heart rate for some adults. effects of caffeine
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

Explanation:

1. Observe the scatter plot: as total coffee (caffeine) intake on the x-axis increases, resting heart rate on the y-axis generally moves upward.
2. A positive correlation means as one variable increases, the other tends to increase, which matches the plot.
3. The upward trend also means resting heart rate is increasing as caffeine intake rises.
4. Negative correlation would mean a downward trend, constant correlation would show no trend, and decreasing heart rate contradicts the upward pattern.

Answer:

B. increasing heart rate
D. positive correlation