You design a research study to investigate if there is a relationship between two variables. You measure each of them without manipulating either one. If you find that Variable A is increasing at about the same rate as Variable B is increasing, what can you conclude?

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Quizplus · Accepted Answer

If the two variables are increasing at about the same rate, then they are positively correlated, which means that as one variable increases, the other variable also increases. Therefore, the best choice is D: Variable A is positively correlated with Variable B. However, correlation does not necessarily imply causation, so we cannot conclude that one variable is causing the other.

You Design a Research Study to Investigate If There Is