Question

Which statement correctly suggests a positive correlation?

A) As the height of a person increases, his or her arm span decreases.
B) As the number of employees in a company increases, the productivity decreases.
C) As the number of vehicles on the road decreases, the number of accidents increases.
D) As the oxygen level in water decreases, the population of fish decreases.

Answer 1

The correct statement that suggests a positive correlation is that as the oxygen level in water increases, the population of fish also increases. The other options indicate a negative correlation, which is not consistent with the question's request for a positive correlation example.

Step-by-step explanation:

The question asks which statement suggests a positive correlation. A positive correlation means that as one variable increases, the other variable also increases. In the provided options, the correct choice is:

• d. As the oxygen level in water decreases, the population of fish decreases.

This is a trick statement since it initially suggests a negative correlation. However, if we reverse the perspective, it implies that as the oxygen level in water increases, the population of fish also increases, which correctly represents a positive correlation. Answering this part of the question, height and weight are given as examples of positive correlation, where as height increases, typically weight increases.