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Calculating with missing values?

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Max Behr
Max Behr 2020-6-17
评论： Max Behr 2020-6-17
Hello,
I got a matrix and one value is missing. I still wan to calculate the standard error of it
>> test=rand(3,3)
test =
0.0975 0.9575 0.9706
0.2785 0.9649 0.9572
0.5469 0.1576 0.4854
>> test(3,1)=missing
test =
0.0975 0.9575 0.9706
0.2785 0.9649 0.9572
NaN 0.1576 0.4854
>> test_SE=std(test)/sqrt(length(test))
test_SE =
NaN 0.2679 0.1595
Why doesn't it work?
And can I let Matlab ignore the missing value?
Thanks.

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采纳的回答

KSSV
KSSV 2020-6-17
编辑：KSSV 2020-6-17
doc nanstd
Or fill NaN values using fillmissing and use std.
Or have a look here:
https://in.mathworks.com/matlabcentral/fileexchange/67270-standard-error-of-the-mean-ignores-nans

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