Difference between revisions of "Documentation/How Tos/Calc: PERCENTRANK function"
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* Despite its name, <tt>'''PERCENTRANK'''</tt> returns a fraction, not a percentage. | * Despite its name, <tt>'''PERCENTRANK'''</tt> returns a fraction, not a percentage. | ||
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* [[Documentation/How_Tos/Calc: RANK function|RANK]] | * [[Documentation/How_Tos/Calc: RANK function|RANK]] | ||
* [[Documentation/How_Tos/Calc: PERCENTILE function|PERCENTILE]] | * [[Documentation/How_Tos/Calc: PERCENTILE function|PERCENTILE]] | ||
Latest revision as of 14:54, 2 February 2024
Spreadsheet Lookup functions
Measures of dispersion / spread
Probability and statistics
Correlation and line fitting
See also (in the Arrays Functions category); GROWTH, LINEST, LOGEST, TREND
Ranking
PERCENTRANK
Returns the percentage rank of a number in a list of numbers.
Syntax:
PERCENTRANK(numberlist; number)
- number is the number whose percentage rank is to be found within the unordered range or array of numbers numberlist.
- PERCENTRANK internally assigns a rank r to number, where 0 is the rank of the lowest number, 1 of the next lowest and so on. If number is not in numberlist, it is assigned a fractional rank proportionately between the rank of the numbers on either side (see the examples). Where N is the count of numbers in numberlist, PERCENTRANK returns r / (N-1), which is a fraction between 0 and 1 inclusive.
- This function is of limited use with a small list of numbers. It may be useful for example when determining where a score lies within all scores for a test, in which case the formula returned can be stated as L / (N-1), where L is the count of scores which are lower than number.
Example:
PERCENTRANK(A2:A99; A7)
- where cells A2:A99 contain scores from a test, returns the percent rank (as a fraction) for the student whose test score is in cell A7.
The next two examples illustrate the calculation, but have little practical application:
PERCENTRANK({3; 4; 9; 11; 12}; 4)
- returns 0.25.
PERCENTRANK({9; 3; 7; 8}; 6)
- returns 0.25. The lowest number 3 is assigned rank '0'; the next highest number 7 is assigned rank '1'. 6 is assigned a rank proportionately between these, rank '0.75'. There are 4 numbers in the list, so the result is calculated as 0.75/(4-1) = 0.75/3 = 0.25.
Issues:
- Despite its name, PERCENTRANK returns a fraction, not a percentage.
See Also
