Returns a quartile value from a data set.
Syntax:
QUARTILE.INC(array, q:number)
Returns the qth quartile from the values in the array or range of cells.
q must be of one the following values:
0 0% = MIN
1 25% = Q1
2 50% = Q2 (MEDIAN)
3 75% = Q3
4 100% = MAX
Added in 1.36.