Difference between revisions of "Documentation/How Tos/Calc: TRIMMEAN function"
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<tt>'''TRIMMEAN(numberlist; fraction)'''</tt> | <tt>'''TRIMMEAN(numberlist; fraction)'''</tt> | ||
| − | : <tt>'''numberlist'''</tt> is a range or array of numbers, not necessarily in order. <tt>'''TRIMMEAN'''</tt> returns the mean, ignoring a <tt>'''fraction'''</tt> (0 <= <tt>'''fraction'''</tt> < 1) of the values in <tt>'''numberlist'''</tt> | + | : <tt>'''numberlist'''</tt> is a range or array of numbers, not necessarily in order. <tt>'''TRIMMEAN'''</tt> returns the mean, ignoring a <tt>'''fraction'''</tt> (0 <= <tt>'''fraction'''</tt> < 1) of the outmost values in <tt>'''numberlist'''</tt>. |
: Specifically, where ''n'' is the count of numbers in <tt>'''numberlist'''</tt>, the highest and lowest INT(''n'' * <tt>'''fraction'''</tt> / 2) values are ignored. | : Specifically, where ''n'' is the count of numbers in <tt>'''numberlist'''</tt>, the highest and lowest INT(''n'' * <tt>'''fraction'''</tt> / 2) values are ignored. | ||
Revision as of 19:17, 24 April 2008
TRIMMEAN
Returns the mean of a set of numbers, ignoring a proportion of high and low values.
Syntax:
TRIMMEAN(numberlist; fraction)
- numberlist is a range or array of numbers, not necessarily in order. TRIMMEAN returns the mean, ignoring a fraction (0 <= fraction < 1) of the outmost values in numberlist.
- Specifically, where n is the count of numbers in numberlist, the highest and lowest INT(n * fraction / 2) values are ignored.
Example:
TRIMMEAN(A1:A100; 0.1)
- returns the mean of the values in cells A1:A100, ignoring the lowest 5 values and the highest 5 values.
