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# 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.

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