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Ajuda Scilab >> Estatística > mean

mean

mean (row mean, column mean) of vector/matrix entries

Calling Sequence

```y=mean(x)
y=mean(x,'r')
y=mean(x,'c')
y=mean(x,'m')```

Arguments

x

real vector or matrix

y

scalar or vector

Description

For a vector or a matrix `x`, `y=mean(x)` returns in the scalar `y` the mean of all the entries of `x`.

`y=mean(x,'r')` (or, equivalently, `y=mean(x,1)`) is the rowwise mean. It returns a row vector: ```y(j)= mean(x(:,j))```

`y=mean(x,'c')` (or, equivalently, `y=mean(x,2)`) is the columnwise mean. It returns a column vector: ```y(i)= mean(x(i,:))```

`y=mean(x,'m')` is the mean along the first non singleton dimension of x (for compatibility with Matlab).

Examples

```A=[1,2,10;7,7.1,7.01];
mean(A)
mean(A,'r')
mean(A,'c')
A=matrix(1:12,[1,1,2,3,2]);
// in this case mean(A,'m') is equivalent to mean(A,3), the first non singleton dimension of A
y=mean(A,'m')```

See Also

• sum — soma (soma linha, soma coluna) de entradas de um vetor ou matriz
• median — median (row median, column median,...) of vector/matrix/array entries
• st_deviation — standard deviation (row or column-wise) of vector/matrix entries
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