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Scilab Help >> Statistics > Central Tendency > harmean

# harmean

harmonic mean

### Calling Sequence

```hm=harmean(x)
hm=harmean(x,'r')(or, equivalently, hm=harmean(x,1))
hm=harmean(x,'c')(or, equivalently, hm=harmean(x,2))```

### Arguments

x

real or complex vector or matrix

### Description

This function computes the harmonic mean of a vector or matrix `x`. For a vector or matrix `x`, `hm=harmean(x)` returns in scalar `hm` the harmonic mean of all the entries of `x`.

`hm=harmean(x,'r')` (or, equivalently, `hm=harmean(x,1)` ) returns in each entry of the row vector `hm` the harmonic mean of each column of `x`.

`hm=harmean(x,'c')` (or, equivalently, `hm=harmean(x,2)` ) returns in each entry of the column vector `hm` the harmonic mean of each row of `x`.

### Examples

`harmean(1:10) // Returns 10/sum(1 ./(1:10)) ~ %pi`

### Bibliography

Wonacott, T.H. & Wonacott, R.J.; Introductory Statistics, fifth edition, J.Wiley & Sons, 1990.

### Comments

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