求标准偏差

> function c=myfunction(x)

> [m,n]=size(x)

> t=0

> for i=1:numel(x)

> t=t+x(i)*x(i)

> end

> c=sqrt(t/(m*n-1))







function c=myfunction(x)

[m,n]=size(x)

t=0

for i=1:m

for j=1:n

t=t+x(i,j)*x(i,j)

end

end



c=sqrt(t/(m*n-1