The news Find a newspaper or magazine article in which some data are reported. For the data discussed in the article, answer the same questions as for Exercises 7–10. Include a copy of the article...

The news Find a newspaper or magazine article in which some data are reported. For the data discussed in the article, answer the same questions as for Exercises 7–10. Include a copy of the article with your report.

Exercises 7–10

Stress A medical researcher measures the increase in heart rate of patients under a stress test. What kind of variable is the researcher studying?