If the points in a scatter diagram tend to duster in a straight line which makes an angle of 30° with the X-axis, what would you say about the strength of association between X and Y?

If the points in a scatter diagram tend to cluster in a straight line which makes an angle of 30° with the X-axis, it means that the change in the value of Y is less proportionate than the change in the value of X. Thus, the strength of association between X and Y is moderate.