Use a marginal plot to:

·    Illustrate the relationship between two variables

·    Assess the distributions of the two variables

·    Check for outliers

A marginal plot is a scatterplot with histograms, boxplots, or dotplots in the margins of the x- and y-axes. By combining a scatterplot with one of these other graphs, marginal plots give you more information than a single graph can provide. Scatterplots highlight the relationship between two variables while the graphs in the margins highlight the distribution of each variable.

Due to changes in its target customers' heights and weights, a clothing manufacturer is considering changing the measurements for each clothing size as well as the proportion of each size manufactured. As part of their preliminary study, they measure the height (in meters) and weight (in kilograms) of 79 pre-teen girls, a key customer group.

Data: HeightAndWeight.MTW (available in the Sample Data folder).