Function quantile( array, quant )

Description:
Returns a quantile value of the non-blank elements in the array. Which quantile is determined by the quant value; values of 0, 0.5 and 1 give the minimum, median and maximum respectively. A value of 0.99 would give the 99th percentile.
Parameters:
array (Object)
array of numbers
quant (floating point)
number in the range 0-1 deterining which quantile to calculate
Return Value (floating point):
quantile corresponding to quant
Signature:
double quantile(Object, double)