Question

ANSWER

Which of the following statements describes a positive correlation?

		The more I study the lower my test scores.
		The greater the cost the better the merchandise.
		Walnut is more dense than pine.
		All of the above are correct

Answer 1

A positive correlation means that when one variable increases, the other increases while if one of the variable decreases, the other decreases.

a) The more I study the lower my test scores, actually suggest a negative correlation here.

b) The greater the cost, the better the merchandise, this is a like a positive correlation case here because we see here that as one variable increases, the other increases, while if one decreases, the other decreases. Therefore positive correlation here.

c) Walnus is more dense than pine is a comparison and not a correlation.

Therefore only B is correct here: The greater the cost the better the merchandise