Description Usage Arguments Details Value References Examples

Computes the deviation from the mode for a vector of frequencies of categories.

1 |

`x` |
a vector of frequencies |

`na.rm` |
if TRUE, missing values are removed. If FALSE, NA is returned if there is any NA value. |

According to Wilcox (1973, p. 327), 'the measure can be thought of as an index of deviation from the modal frequency, analogous to the variance as a measure of deviation from the mean'. The formula for the DM is:

*1 - \frac{∑_{i = 1}^k (f_m - f_i)}{N(K-1)}*

The value of the DM statistics, which is normalised (varies between 0 and 1).

Wilcox, Allen R. 'Indices of Qualitative Variation and Political Measurement.' *The Western Political Quarterly* 26, no. 2 (1 June 1973): 325-43. doi:10.2307/446831.

1 2 3 4 5 6 7 8 9 |

```
[1] 0.92
[1] 0.9200000 0.9333333 0.9466667 0.8800000 0.9466667 0.9066667 0.9066667
[8] 0.9466667 0.8933333 0.8933333
```

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