std_error: Standard error of the mean
In strboul/mmy: Custom miscellaneous R functions

Description Usage Arguments Details

In the cases that we do not know about the population parameter of variation (which is usually the case), we can take a number of samples from the population and calculate each of these sample means that will always deviate from normal.

1	std_error(x)

`x`	a numeric vector.

The standard error of the mean formula is as follows.

If the population standard deviation is known:

SE_{\overline{x}} = \frac{σ}{√{n}}

where σ: standard deviation of the population n: number of observations of the sample

If the population standard deviation is not known, the standard error of the mean is approximately equal to the “sample standard deviation” divided by the number of observations.

strboul/mmy documentation built on Sept. 24, 2021, 12:08 p.m.