(percentile lst prc)

percentile returns a percentile value from a list. This function interpolates if needed.

Parameter	Description
lst	List to operate on
prc	Percentile value [0-100]

Example

Example 1: Get 10th percentile from a list

> (percentile '(1 2 3 4 7) 10)
7/5
> (percentile '(0 1 2 3 4 5) 20) 
1