hubers: Huber Proposal 2 Robust Estimator of Location and/or Scale
Description
Finds the Huber M-estimator for location with scale specified, scale
with location specified, or both if neither is specified.
Usage
hubers(y, k = 1.5, mu, s, initmu = median(y), tol = 1e-06)
Value
list of location and scale estimates
- mu
- location estimate 
- s
- scale estimate 
Arguments
- y
- vector y of data values 
- k
- Winsorizes at - kstandard deviations
 
- mu
- specified location 
- s
- specified scale 
- initmu
- initial value of - mu
 
- tol
- convergence tolerance 
References
Huber, P. J. (1981)
Robust Statistics.
Wiley.
Venables, W. N. and Ripley, B. D. (2002)
  Modern Applied Statistics with S. Fourth edition.  Springer.
Examples
Run this codehubers(chem)
hubers(chem, mu=3.68)
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