Let us draw a scatterplot with a strong, positive, linear relationship and let us draw a scatterplot with a strong, positive, curved relationship.
The two relationships then have different forms as one is linear and the other is curved.
Scatterplots Which of the scatterplots below show
a) little or no association?
b) a negative association?
c) a linear association?
d) a moderately strong association?
e) a very strong association?