Calculate Standard deviation in table
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Dion Theunissen
le 25 Juin 2021
Réponse apportée : Erkan MSN
le 24 Jan 2022
Hi,
I have a table with 20 columns, I want to make a new column with the standard deviation of each row from column 4 to 6.
So after column 6 i want to have a column with the stdev of all rows of column 4:6.
How can I do that?
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Chunru
le 25 Juin 2021
a = array2table(rand(5,8)) % Sample table
s = std(a{:, 4:6}, [], 2) % std along rows (dim=2)
b = [a table(s, 'VariableNames', {'std'})] % combine with original
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Erkan MSN
le 24 Jan 2022
If you want to calculate the standard deviation of the whole table:
For example "cax" is table.
1.6424 5.2601 1.4691 0.7361 0.2771
1.0531 0.5722 1.8804 4.9636 0.9451
1.8084 1.6537 1.5916 0.8352 0.7740
0.7550 1.4221 1.7003 2.5646 0.4272
2.2935 2.5158 0.7656 1.0110 2.0810
1.0765 0.5390 1.9687 2.0829 0.4572
1.0493 1.4736 1.2810 1.0911 0.2073
2.1630 0.5679 2.8582 1.6006 0.4746
1.1625 0.7333 0.2623 0.6887 0.7897
2.9148 0.2886 3.1662 0.3645 0.5730
std(cax,[],'all')
ans =
1.0786e+03
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