Description Usage Arguments Details Value Author(s) References See Also Examples

Computation of Tukey's Biweight Robust Mean, a robust average that is unaffected by outliers.

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`x` |
a numeric vector |

`C` |
a constant. |

This is a one step computation that follows the Affy whitepaper below see
page 22. This function is called by `chron`

to calculate a
robust mean. `C`

determines the point at which outliers are given a
weight of 0 and therefore do not contribute to the calculation of the mean.
C=9 sets values roughly +/-6 standard deviations to 0. C=6 is also used in
tree-ring chronology development. Cook and Kairiukstis (1990) have further
details.

Retrieved from `tbrm`

.

A numeric mean.

Andy Bunn

Statistical Algorithms Description Document, 2002, Affymetrix. p22.

Cook, E. R. and Kairiukstis, L.A. (1990) *Methods of Dendrochronology: Applications in the Environmental Sciences.* ISBN-13: 978-0792305866.

Mosteller, F. and Tukey, J. W. (1977) *Data Analysis and Regression: a second course in statistics.* Addison-Wesley. ISBN-13: 978-0201048544.

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