Question

2 mark for review which of the following is the best description of a positive association between two variables? a the values will create a line when graphed on a scatterplot. b the values will create a line with positive slope when graphed on a scatterplot. c as the value of one of the variables increases, the value of the other variable tends to decrease. d as the value of one of the variables increases, the value of the other variable tends to increase. e all values of both variables are positive.

Explanation:

A positive association between two variables means that as the value of one variable increases, the value of the other variable also tends to increase. A line on a scatter - plot doesn't necessarily imply a positive association (it could be negative or no association), and a line with positive slope is a stronger condition than just a positive association. Also, positive association has nothing to do with the variables having all positive values.

Answer:

D. As the value of one of the variables increases, the value of the other variable tends to increase.