Family Heights. In Exercises 1–5, use the following heights (in.) The data are matched so that each column consists of heights from the same family.

Father	68.0	68.0	65.5	66.0	67.5	70.0	68.0	71.0
Mother	64.0	60.0	63.0	59.0	62.0	69.0	65.5	66.0
Son	71.0	64.0	71.0	68.0	70.0	71.0	71.7	71.0

Scatterplot Construct a scatterplot of the father/son heights, then interpret it.

The heights of three members of a family are studied.

A scatterplot is sketched for paired values in the dataset where one value is scaled corresponding to the variable on the horizontal axis and the other corresponding to the vertical axis.

Steps to sketch a scatterplot:

1. Mark two axis; horizontal for the father's height and vertical for the son’s height.
2. Mark the coordinates of height for two variables on the plot.

The resultant scatterplot is shown below.

From this scatterplot, thefollowing observations are made:

• The dots do not follow any specific pattern.
• The dots are clusters in the range of 68 to 72 inches vertically.

Thus, it can be inferred that there is no association between the heights of the father and the son.