Scientists have found that, on average, as a person's height increases, so does her or his weight. This finding is an example of ______.
A) placebo effect
B) a positive correlation
C) a selection factor
D) a negative correlation

Question

Quizplus · Accepted Answer

A positive correlation means that as one variable increases, the other variable also tends to increase. In this case, as height increases, weight tends to increase as well, indicating a positive correlation between the two variables. The other choices do not accurately describe the relationship between height and weight.

Scientists Have Found That, on Average, as a Person's Height