This function implements the paired Wilcoxon signed-rank test

1 | ```
wilcoxonSignedTest(x, y, ...)
``` |

`x` |
First sample |

`y` |
Second sample |

`...` |
Ignored |

The test has been implemented according to the version in Demsar (2006), page 7

A list with class "htest" containing the following components: `statistic`

, the value of the statistic used in the test; `p.value`

, the p-value for the test; `method`

, a character string indicating what type of test was performed and `data.name`

, a character string giving the name of the data.

Demsar, J. (2006) Statistical Comparisons of Classifiers over Multiple Data Sets. *Journal of Machine Learning Research*, 7, 1-30.

1 2 3 | ```
x <- rbeta(50, 2, 20)
y <- x + runif(50) * 0.2
wilcoxonSignedTest(x, y)
``` |

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