Description Usage Arguments Details Value Author(s)
Compute the robust scale measure Qn pooled over two samples.
1 |
x |
vector of observations |
y |
vector of observations |
factor |
Scaling factor |
The default scaling factor is chosen such that the estimate is approximately consistent for normal observations. For different reference distributions other factors may be more apropriate. Note however, that we have hardcoded the bias correction constants applied to small samples - these may differ as well for other reference distributions. Changing the factor may be futile.
Note that we use a computationally suboptimal implementation that uses O(n^2)
operations. If time allows we may implement the more efficient method given in "Croux and Rousseeuw (1992)" which requires only O(n*log(n))
operations.
numeric value
Florian Klinglmueller
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