3.14 Figure 3.6 is a scatterplot of the age (in months) at which a child begins to talk and the child’s later score on a test of mental ability (Gesell Adaptive Score), for each of 21 children (2 sets of 2 children happen to have the same values).12 To describe the relationship in Figure 3.6, you would say that

a. it is a positive curved association.

b. it is a negative linear association.

c. it shows no association.

Gesell Adaptive Score 120 110 100 90 80 70 60- 50 in 5 10 15 20 25 30 35 40 45 Age at first word (months)