Returns the kth percentile of values in a range, where k is in the range 0..1, inclusive.
You can use this function to establish a threshold of acceptance. For example, you can decide to examine candidates who score above the 90th percentile.
Syntax
PERCENTILE.INC(array,k)
The PERCENTILE.INC function syntax has the following arguments (argument: A value that provides information to an action, an event, a method, a property, a function, or a procedure.):
 Array Required. The array or range of data that defines relative standing.
 K Required. The percentile value in the range 0..1, inclusive.
Remarks
 If array is empty, PERCENTILE.INC returns the #NUM! error value.
 If k is nonnumeric, PERCENTILE.INC returns the #VALUE! error value.
 If k is < 0 or if k > 1, PERCENTILE.INC returns the #NUM! error value.
 If k is not a multiple of 1/(n  1), PERCENTILE.INC interpolates to determine the value at the kth percentile.
Example
The example may be easier to understand if you copy it to a blank worksheet.
How do I copy an example?
 Select the example in this article. If you are copying the example in Excel Online, copy and paste one cell at a time.
Important: Do not select the row or column headers.
Selecting an example from Help
 Press CTRL+C.
 Create a blank workbook or worksheet.
 In the worksheet, select cell A1, and press CTRL+V. If you are working in Excel Online, repeat copying and pasting for each cell in the example.
Important: For the example to work properly, you must paste it into cell A1 of the worksheet.
 To switch between viewing the results and viewing the formulas that return the results, press CTRL+` (grave accent), or on the Formulas tab, in the Formula Auditing group, click the Show Formulas button.
After you copy the example to a blank worksheet, you can adapt it to suit your needs.

A 
Data 
1 
3 
2 
4 
Formula 
Description (Result) 
=PERCENTILE.INC(A2:A5,0.3) 
30th percentile of the list above (1.9) 
