Select lowess smoother > Editor > Edit Lowess Smoother > Attributes
Use to change the attributes of the fitted line on a scatterplot, matrix plot, histogram, or time series plot. To add a lowess smoother to a graph, choose Editor > Add > Smoother.
Lines
Automatic: Choose to accept the default line attributes.
Custom: Choose to customize the line attributes.
Type: Choose a line type.
Color: Choose a line color.
Size: Choose a line width.
<Binning> (histogram only)