The "dot plots in R" typically refers to two distinct types of visualizations: (i) Cleveland dot plots (for comparing categories) and (ii) Stacked (Wilkinson) dot plots (for showing distributions). A dot plot is a graphical representation that breaks the range of data into many small equal-width intervals and counts the number of observations in each interval. The interval count is superimposed on the number line at the interval midpoint as a series of dots (stacked if repeated), usually one for each observation.