Violin plots have many of the same summary statistics as box plots: the white dot represents the median the thick gray bar in the center represents the interquartile range the thin gray line represents the rest of the distribution, except for points that are determined to be “outliers” using a method that is a function of the interquartile range.

As compared to the box plot it only shows a summary of the statistics such as the mean/median and interquartile ranges but the violin plot shows the full distribution of the data. Violin Plot also includes a maker for the median of the data and also a box indicating the interquartile range, as in box plots.