Question

a group of 25 middle school students participated in a study during their physical education course. their working heart rate and their recovery heart rate were recorded during and after their exercise (both in beats per minute). a working heart rate is the highest heart rate a person has during exercise. the recovery heart rate is the difference between their working heart rate and their post - exercise resting heart rate. the data is represented in the scatter plot below. use the scatter plot and the sentence to choose one and interpret the strength and direction of the correlation.

(then there is a scatter plot with the x - axis labeled with correlation types: no correlation, a weak positive correlation, a weak negative correlation, a strong positive correlation, a strong negative correlation, and the y - axis labeled \between the middle school students working heart rate and recovery heart rate\)

Explanation:

To determine the correlation between working heart rate and recovery heart rate:

Step 1: Analyze the Direction of the Trend

The scatter plot’s trend line (or the general pattern of points) slopes downward from left to right. This indicates a negative correlation (as one variable increases, the other tends to decrease).

Step 2: Analyze the Strength of the Correlation

The points cluster relatively closely around the trend line, suggesting a strong relationship (not weak or very weak).

Answer:

A strong negative correlation