Marginal plots typically contain the following elements:

·    A scatterplot

·    Either a histogram, boxplot, or dotplot in the margins of the x- and y-axes

By combining a scatterplot with one of these other graphs, marginal plots provide more information than a single graph.

Look at the scatterplot to examine the direction, strength, and linearity of the relationship between the two variables. The plots in the margins highlight the distribution of each variable.

In the height and weight data, the scatterplot shows a positive and slightly curved relationship between the two variables. The height histogram shows that this distribution appears centered around 1.5 meters and is symmetric. The weight histogram shows that this distribution has a mode of approximately 45 kilograms and it is positively skewed.