A Group of Students Participated in an Experiment to Study

Multiple Choice

A group of students participated in an experiment to study the association between resting heart rate and exercise heart rate under various exercise conditions. Study participants stepped at a frequency of 14 steps per minute (0) , 21 steps per minute (1) , and 28 steps per minute (2) . To investigate the relationship between resting and exercise heart rate, and to see the effects of step frequency on the relationship, a scatterplot might be created by:

A) plotting resting heart rate on the y axis and exercise heart rate on the x axis.
B) plotting exercise heart rate on the y axis and step frequency on the x axis.
C) using separate symbols for the different step frequencies to see if the relationship is affected by step frequency, while plotting resting heart rate on the x axis and exercise heart rate on the y axis.
D) None of the answer options is correct.