Polykay

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In statistics, a polykay, or generalised k-statistic, (denoted  k r , s {\displaystyle k_{r,s}} ) is a statistic defined as a linear combination of sample moments.[1]

## Etymology

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The word polykay was coined by American mathematician John Tukey in 1956, from poly, "many" or "much", and kay, the phonetic spelling of the letter "k", as in k-statistic.[2]

## References

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1. ^ "Polykay". Wolfram.
2. ^ Tukey, J. W. (1956.) "Keeping Moment-Like Computations Simple", Ann. Math. Stat., 27:37–54.

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