Stata Msymbol. Use the option normal when making the histogram. We can also change the shape of the points in the scatterplot by using the msymbol command.
You specify the symbolstyle inside the msymbol option allowed with many of the graph. Twoway connected y1 x sort msymbol s add lines for y2 and y3 and use default marker symbols twoway connected y1 y2 y3 x sort as above with different marker symbols for each set of points twoway connected y1 y2 y3 x sort msymbol s d o. Showmarkers over msymbol msize large.
2 symbolstyle choices for the shape of markers description markers are the ink used to mark where points are on a plot.
Symbolstylespecifies the shape of the marker. Msymbol symbolstyle specifies the shape of the marker and is one of the more commonly specified options. Msymbol o d s t x o d s t smplus x is the default. Msymbol symbolstyle specifies the shape of the marker and is one of the more commonly specified options.