How do I do SEM Error Bars?

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Delany MacDonald
Delany MacDonald 2016-4-1
评论： Star Strider 2019-11-7
I know how to find the standard deviation with error bars but how do I find the standard error mean of variables?

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Star Strider
Star Strider 2016-4-1
You have to know the number of observations that went into calculating each standard deviation.
Assuming ‘x’ is a vector:
SEM = std(x)/sqrt(length(x));
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Vlatko Milic
Vlatko Milic 2019-11-7
Hi,
I get two outputs when calculating the standard error according to your example. What can the reason for this be?
Kind regards
Star Strider
Star Strider 2019-11-7
My code calculates ±95% confidence limits, so it produces both limits.

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