R - quantile() Function

The R quantile() function returns sample quantiles of the argument corresponding to the specified probabilities. The syntax for using this function is given below:

Syntax

quantile(x, probs, na.rm = FALSE)

Parameters

Return Value

Returns sample quantiles of the argument corresponding to the specified probabilities.

Example:

The example below shows the usage of quantile() function.

vec <- c(10, 55, 25, -56, 30, 99, 102, 67.34)

#calculating quantiles without prob parameter
cat("quantiles of vec:", quantile(vec), "\n")

#defining probabilities for quantiles
p <- c(0.25, 0.5, 0.75, 0.99)
#calculating quantiles using prob parameter
cat("quantiles of vec:", quantile(vec, prob=p), "\n")

The output of the above code will be:

quantiles of vec: -56 21.25 42.5 75.255 102 
quantiles of vec: 21.25 42.5 75.255 101.79 

Using na.rm parameter

The na.rm parameter can be set TRUE to remove NA or NaN values before the computation.

Example:

Consider the example below to see the usage of na.rm parameter.

vec <- c(10, 55, 25, -56, 30, 99, 102, 67.34, NA, NaN)

p <- c(0.25, 0.5, 0.75, 0.99)
#calculating quantiles after removing NA and NaN
cat("quantiles of vec:", quantile(vec, prob=p, na.rm=TRUE))

The output of the above code will be:

quantiles of vec: 21.25 42.5 75.255 101.79