Editor > Add > Data Display
Use to add or remove data display types from the active graph.
Data Display
Bars: Check to display bars that join each data value to its base. By default, the height of each bar is equal to the frequency of the interval it represents.
Symbols: Check to represent each data value with a symbol.
Project lines: Check to display lines that project from each data point to its base.
Area: Check to draw a histogram with an outline of the bars (only visible if you uncheck Bars).