Adding a standard deviation to the equation

1 次查看（过去 30 天）
Precious Benmaurice
回答： NISARGA G K 2018-3-19
Hi,I'm trying to find the standard deviation from this function code that I've written for my mean, please how do I adjust it in order to find the standard deviation from the code I have written? I've tried a few codes but its not running.
function [ret] = mymean(a)
%UNTITLED Summary of this function goes here
% Detailed explanation goes here
len = length(a);
store=0;
for i=1:len
store=store+a(i);
end
ret = store / len;
end

请先登录，再回答此问题。

回答（1 个）

NISARGA G K
NISARGA G K 2018-3-19
I understand you want to find standard deviation of the vector. Add the following line to your code to obtain the same
standard_deviation = sqrt(sum((a - ret).^2)./(len-1))
Alternately, you can use mean and std functions in matlab

类别

在 Help Center 和 File Exchange 中查找有关 Creating and Concatenating Matrices 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by