Feeding habits of fish. Refer to the Brain and Behavior Evolution (Apr. 2000) study...

Feeding habits of fish. Refer to the Brain and Behavior Evolution (Apr. 2000) study of the feeding behavior of black-bream fish, presented in Exercise 2.162 (p. 96). Recall that the zoologists recorded the number of aggressive strikes of two black-bream fish feeding at the bottom of an aquarium in the 10-minute period following the addition of food. The table listing the weekly number of strikes and the age of the fish (in days) is reproduced below.

Reference: Exercise 2.162

Feeding behavior of fish. The feeding behavior of black bream (a type of fish) spawned in aquariums was studied in Brain, Behavior and Evolution (Apr. 2000). Zoologists recorded the number of aggressive strikes of two black bream feeding at the bottom of the aquarium in the 10-minute period following the addition of food. The number of strikes and age of the fish (in days) were recorded approximately each week for nine weeks, as shown in the table below.

a. Construct a scatterplot of the data, with number of strikes on the y-axis and age of the fish on the x-axis.

b. Examine the scatterplot of part a. Do you detect a trend?