Claim: A rug plot, a plot of data for a single quantitative variable, displayed as marks along an axis, is used to visualize the distribution of the data and in combination with two-dimensional scatter plots by placing a rug plot of the x values of the data along the x-axis, and similarly for the y values.
Evidence: A rug plot is a plot of data for a single quantitative variable, displayed as marks along an axis. It is used to visualize the distribution of the data. Rug plots are often used in combination with two-dimensional scatter plots by placing a rug plot of the x values of the data along the x-axis, and similarly for the y values.