errors: error functions
In olobiolo/acutils: Aleks Chlebowski's Utility Functions

Description Usage Arguments Details Value Functions Disclaimer

Functions to express the uncertainty of a sample.

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sem(x, na.rm = TRUE)

conf(x, na.rm = TRUE, confidence = 0.99)

`x`	a numeric vector
`na.rm`	logical flag whether to remove NA values
`confidence`	the desired confidence

These are helper functions for drawing error bars on plots. They both calculate a measure of uncertainty and return a single number, which is the width of the "uncertainty interval". Add and subtract this unmber to the sample mean to get the position of the error bars.

a single numeric

sem: standard error of the mean, i.e. the standard deviation of the sample divided by the square root of the number of elements
conf: half of the width of the confidence interval of the mean for a numeric vector

The confidence interval is calculated with a t distribution. I don't understand how the confidence interval is calculated.

olobiolo/acutils documentation built on Nov. 28, 2021, 9:35 p.m.