I have a variance question, however, my code isn't bringing up this in the command window when i try to run it. "Function definition are not supported in this context".

Question

Muhideen Ogunlowo 2023-9-14

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2021076-i-have-a-variance-question-however-my-code-isn-t-bringing-up-this-in-the-command-window-when-i-try

编辑： Walter Roberson 2023-9-14

function s2 = samplevar(x)
n=length(x); %sample size
q=mean(x);% mean of vector
for x=2:n
    s2= sum((x-q)^2)/(n-1); formula for sample variance
end
x =[3,5,6,7,8,10]; example of a vector
samplevar(x) output
end

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Answer 1

Dyuman Joshi 2023-9-14

1
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https://ww2.mathworks.cn/matlabcentral/answers/2021076-i-have-a-variance-question-however-my-code-isn-t-bringing-up-this-in-the-command-window-when-i-try#answer_1310386

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This section should not be a part of the function definition. Use this section to call the function from the command window/line.

x =[3,5,6,7,8,10]; %example of a vector
%Function call
y = samplevar(x)
y = 0.0500

%This section is for the definition of the function
function s2 = samplevar(x)
n=length(x); %sample size
q=mean(x);% mean of vector
for x=2:n
    s2= sum((x-q)^2)/(n-1); %formula for sample variance
end
end