Write Standard Deviation Distance

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Lisbeth Ccoyo Ortiz
评论： Walter Roberson 2025-8-2
I am asked to write a function called standard_deviation_distance that takes as input a data vector [1xN] v and a number x [1x1], in that order. And I have code to call your function:
v = [10 12 14];
x = 7;
dist = standard_deviation_distance(v,x)% =-2.5

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回答（3 个）

VBBV
VBBV 2022-6-5
编辑：VBBV 2022-11-10
Ran in:
v = [10 12 14];
x = ones(1,numel(v))*7;% length of x vector (weights) for each element and to be same as vector v
dist = standard_deviation_distance(v,x);
disp(['The standard deviation distance is ', num2str(dist)])
The standard deviation distance is 1.633
function y = standard_deviation_distance(v,x)
y = std(v,x);
end
Himanshu Desai
Himanshu Desai 2023-5-31
编辑：Himanshu Desai 2023-5-31
function y = standard_deviation_distance(v,x)
m = mean(v);
s = std(v);
y = (x-m)/s;
end
dist = -2.500
v = [10 12 14];
x = 7;
y = standard_deviation_distance(v,x)
Mark
Mark 2025-8-1
编辑：Walter Roberson 2025-8-1
Ran in:
v = [10 12 14];
x = ones(1, numel(v))*7;
dist = std(v,x)
dist = 1.6330
disp(['The standard deviation distance is ' num2str(dist)])
The standard deviation distance is 1.633
  3 个评论
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Torsten
Torsten 2025-8-1
编辑：Torsten 2025-8-1
I don't see a difference to @VBBV 's solution (except for "nume1" instead of "numel").
Maybe it was meant as "test test test".
Walter Roberson
Walter Roberson 2025-8-2
@VBBV solution involved a function (as was required by the terms of the question)

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