A study found that eating junk food is related to getting cancer .Which of these statements is true?
A)Adding control variables could increase the relationship between junk food and cancer.
B)Adding control variables could decrease the relationship between junk food and cancer.
C)Adding control variables could eliminate the relationship between junk food and cancer.
D)All of the above

Question

Quizplus · Accepted Answer

Adding control variables in a study can have various effects on the observed relationship between two variables. It can increase, decrease, or even eliminate the relationship, depending on the nature of these control variables and how they are related to both the independent variable (in this case, eating junk food) and the dependent variable (getting cancer). Control variables help to isolate the specific impact of the independent variable by holding constant other factors that might influence the outcome.

A Study Found That Eating Junk Food Is Related to Getting