In
statistics, a polykay, or generalised k-statistic, (denoted
) is a statistic defined as a
linear combination of
sample moments.
Etymology
The word ''polykay'' was coined by
American mathematician
John Tukey
John Wilder Tukey (; June 16, 1915 – July 26, 2000) was an American mathematician and statistician, best known for the development of the fast Fourier Transform (FFT) algorithm and box plot. The Tukey range test, the Tukey lambda distributi ...
in 1956, from ''poly'', "many" or "much", and ''kay'', the phonetic spelling of the letter "k", as in
k-statistic.
[Tukey, J. W. (1956.) "Keeping Moment-Like Computations Simple", ''Ann. Math. Stat.'', 27:37–54.]
References
{{Statistics-stub
Symmetric functions
Statistical inference