Compute classical and robust means and standard deviations of returns for all the stocks in the microcap group, and plot the means versus standard deviations for these estimates. Use one plotting...

Compute classical and robust means and standard deviations of returns for

all the stocks in the microcap group, and plot the means versus standard

deviations for these estimates. Use one plotting symbol for the classical

estimates and another plotting symbol for the robust estimates. Add the

ticker symbols as text labels. (Warning: with a lot of stocks there may be

confusing overlap of these text labels.)