Chapter 4.1, Problem 4.11E

(a)

To determine

To construct the scatterplot using mean NEAP scores as the explanatory variable.

Explanation of Solution

The scatterplot for Percent proficient is as follows:

  

(b)

To determine

To describe the direction, form and strength of the relationship in the above scatter plots.

Explanation of Solution

The relationship of percent proficient scatterplot is a positiveassociation (slopes upwards), strong (points are close together) and linear (points form a line).

(c)

To determine

To circle out the home states’ points that are outliers and then choose one point and identify which state it is and in what way it is interesting.

Explanation of Solution

For the percent proficient scatterplot:

There are no outliers.