R: Obtain statistic of centrality

CentralValue {DescTools} | R Documentation

## Obtain statistic of centrality

### Description

This function obtains a statistic of centrality of a variable given a sample of its values.

### Usage

    CentralValue(x, weights = NULL)

### Arguments

`x` | a vector of values (the sample).
`weights` | a numerical vector of weights the same length as `x` giving the weights to use for elements of `x`.

### Details

If the variable is numeric it returns the median of the given sample, if it is a factor it returns the mode. In other cases it tries to convert to a factor and then returns the mode.

### Value

A number if the variable is numeric. A string with the name of the most frequent nominal value, otherwise.

### Author(s)

Luis Torgo ltorgo@dcc.fc.up.pt

### References

Torgo, L. (2010) Data Mining using R: learning with case studies, CRC Press (ISBN: 9781439810187).

http://www.dcc.fc.up.pt/~ltorgo/DataMiningWithR

### See Also

`mean`, `median`

### Examples

    # An example with numerical data
    x <- rnorm(100)
    CentralValue(x)

    # An example with nominal data
    y <- factor(sample(1:10, 200, replace=TRUE), levels=1:10,
                labels=paste('v', 1:10, sep=''))
    CentralValue(y)

[Package DescTools version 0.99.35 Index]