sem: Standard error of the mean
In kbroman/labstat: Statistics for Lab Scientists

Calculate the standard error of the mean (SEM) for a vector of numbers.

sem(x)

`x`	A vector of numbers.

The returned value is s/sqrt(n) where s is the sample standard deviation (SD) and n is the sample size. Missing values are discarded.

The estimated standard error of the estimate of the mean of the population from which the numbers were drawn.

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x <- rnorm(100,10,2)
mean(x)
sem(x)

kbroman/labstat documentation built on Jan. 6, 2021, 4:51 a.m.

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