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See the recommended documentation of this function

Scilabヘルプ >> Statistics > Descriptive Statistics > covar

covar

2つの変数の共分散

呼び出し手順

s=covar(x,y,fre)

パラメータ

x

実数または複素数のベクトル

y

実数または複素数のベクトル

fre

length(x) x length(y)の行列

説明

covar(x,y,fre) は2つの変数xおよびyの 共分散を計算します. freは次元length(x) x length(y)の行列です. freの中で,インデックス(i,j)の要素はx_i&y_jの 値または数値または周波数に対応します.

参考文献

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

x=[10 20 30 40]
y=[10 20 30 40]
fre=[.20 .04 .01  0;
     .10 .36 .09  0;
       0 .05 .10  0;
       0   0   0 .05]
s=covar(x,y,fre)
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Last updated:
Thu Oct 02 13:58:24 CEST 2014