Trimmed Arithmetic Mean Score

This function computes the *trimmed arithmetic mean* using mean.

Usage

trimmedMean(x, trim = 0, i = NULL, na.rm = TRUE, ...)

Arguments

x

An R object. Currently there are methods for numeric/logical vectors and date, date-time and time interval objects. Complex vectors are allowed for trim = 0, only.

trim

the fraction (0 to 0.5) of observations to be trimmed from each end of x before the mean is computed. Values of trim outside that range are taken as the nearest endpoint.

i

(optional) numerical vector giving the position in x or character vector matching the names in x. If missing or i = NULL, the entire x is considered for the computation of the score

na.rm

a logical evaluating to TRUE or FALSE indicating whether NA values should be stripped before the computation proceeds.

...

further arguments passed to or from other methods.

Value

If trim is zero (the default), the arithmetic mean of the values in x is computed, as a numeric or complex vector of length one. If x is not logical (coerced to numeric), numeric (including integer) or complex, NA_real_ is returned, with a warning.

If trim is non-zero, a symmetrically trimmed mean is computed with a fraction of trim observations deleted from each end before the mean is computed.

Details

It is a wrapper to mean function.

See also

mean

Author

Alessandro Barberis

Examples

x = c(seq_len(length.out = 10), NA)
trimmedMean(x = x, na.rm = TRUE, trim = 0.1)
#> [1] 5.5