TRIMMEAN

Returns the mean of a given set of numbers, ignoring a specified proportion of high and low values.

Syntax

TRIMMEAN(number_list; fraction)

number_list: The range containing the data set to trim and average. Eg., A2:A10

fraction: The fractional number of data points to exclude. For example, 0.2 indicates that in a data set with 10 values, 2 (10*0.2) values will be excluded, one from the top and one from the bottom. Eg., 0.2

Remarks

The fraction value is rounded up to the nearest even number, when an odd number if given.

Examples

Formula	Result
=TRIMMEAN(A2:A10;B2)	8
=TRIMMEAN(A2:A10;B3)	7.6
=TRIMMEAN(A2:A10;B4)	7.333333333

Get a hands-on experience of the function in the embedded range below.

Possible Errors

Errors	Meaning
#N/A!	The function could not find the value it was asked to look for. Commonly occurs in VLOOKUP and similar functions.
#NAME!	The function name is incorrect or invalid. The given defined name (if any) is invalid. There is a typo in the defined name used in the function. Double quotes are missing for text values in the function. Colon missing in a cell range reference.
#VALUE!	The given argument's data type is incorrect or invalid. For example, the function =DATE(A1:A3) will return a #VALUE error when a text value is present in the range.
#REF!	The given cell reference is incorrect or invalid. This error may occur when a cell/range has been deleted, moved or pasted over.

Similar Functions

AVERAGE
AVERAGEA
AVERAGEIF
AVERAGEIFS
GEOMEAN
HARMEAN
LARGE
MAX
MAXA
MEDIAN
MIN
MINA
SMALL

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