What statistical test would you use to test the difference in heart rate response to exercise between a group of cardiac patients involved in a formal cardiac rehabilitation program and another group exercising at home?
a. Central tendency
b. Chi-square
c. Pearson product moment correlation
d. t-test
ANS: D
The t-test is used to determine if there is a significant difference between groups with data measured at the interval or ratio level.
There are several measures of central tendency; none of them would be used to find a significant difference between groups.
Chi-square determines whether two variables are independent or related.
Pearson product moment correlation is a parametric test used to determine relationships among variables.
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