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Aide Scilab >> Statistiques > correl

# correl

correlation of two variables

### Calling Sequence

`rho=correl(x,y,fre)`

### Arguments

x

real or complex vector

y

real or complex vector

fre

matrix of type length(x) x length(y)

### Description

`correl(x,y,fre)` computes the correlation of two variables x and y. fre is a matrix of dimensions length(x) x length(y). In fre the element of indices (i,j) corresponds to the value or number or frequences of x_i&y_j.

### References

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

### Examples

```x=[2.5 7.5 12.5 17.5]
h=[0 1 2]
fre=[.03 .12 .07;.02 .13 .11;.01 .13 .14;.01 .09 .14]
rho=correl(x,h,fre)```

• covar — covariance of two variables

Carlos Klimann