The function provides interactive visualization of robust M estimation of location.
see.M()The value c = 1.28 gives 95 percent efficiency of the mean given normality. The sample median and mean can be considered special cases of M-estimators. The value c = 0 provides the sample median, while the value, \(c = \infty\) gives the sample mean.
Wilcox, R. R. (2005) Introduction to Robust Estimation and Hypothesis Testing, Second Edition. Elsevier, Burlington, MA.