twotPermutation {DAAG} | R Documentation |

## Two Sample Permutation Test

### Description

This function computes the p-value for the two sample t-test using a permutation test. The permutation density can also be plotted.

### Usage

```
twotPermutation(x1 = DAAG::two65$ambient, x2 = DAAG::two65$heated, nsim = 2000,
plotit = TRUE)
```

### Arguments

`x1` |
Sample 1 |

`x2` |
Sample 2 |

`nsim` |
Number of simulations |

`plotit` |
If TRUE, the permutation density will be plotted |

### Details

Suppose we have n1 values in one group and n2 in a second, with n = n1 + n2. The permutation distribution results from taking all possible samples of n2 values from the total of n values.

### Value

The p-value for the test of the hypothesis that the mean of
`x1`

differs from `x2`

### Author(s)

J.H. Maindonald

### References

Good, P. 2000. Permutation Tests. Springer, New York.

### Examples

```
twotPermutation()
```

[Package

*DAAG*version 1.25.6 Index]