In statistics, the Shapiro-Wilk test tests the null hypothesis that a sample x1, ..., xn came from a normally distributed population. It was published in 1965 by Samuel Shapiro and Martin Wilk.
In R, one does the Shapiro-Wilk test with command:
shapiro.test(x)
References
- Shapiro, S. S. and Wilk, M. B. (1965). "An analysis of variance test for normality (complete samples)", ''Biometrika'', 52, 3 and 4, pages 591-611. http://www.jstor.org/view/00063444/di992333/99p0027o/0
- Algorithm AS R94 (Shapiro Wilk) FORTRAN code
- Shapiro-Wilk Normality Test in CRAN
- C code in CRAN (look for swilk.c)
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