Find the discrete k-th percentile value for a column or group.

## Usage

PercentileDisc(number, k)

**number** (required) The column of numbers to be searched.

**k** (required) Percentile fraction between 0 and 1.

## Example

PercentileDisc([Score], 0.7)

- If the column values are 2, 4, 6, 8, and 10, the result would be 8.