Calculate Standard deviation in table
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Dion Theunissen
el 25 de Jun. de 2021
Respondida: Erkan MSN
el 24 de En. de 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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Respuesta aceptada
Chunru
el 25 de Jun. de 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
el 24 de En. de 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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