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Top Forums UNIX for Dummies Questions & Answers Calculate the Median, first quartile and third quartile using AWK Post 302266118 by vidyadhar85 on Tuesday 9th of December 2008 01:26:32 PM
Old 12-09-2008
this will find the mean of numbers
Code:
awk '{mean += $2}END{print "mean ="mean/NR}' filename


Last edited by otheus; 01-30-2009 at 05:25 AM.. Reason: Corrected equation for mean
 

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NUMAVERAGE(1)						User Contributed Perl Documentation					     NUMAVERAGE(1)

NAME
numaverage - Find the average of a set of numbers. SYNOPSIS
numaverage [-dhiIlmMV] <FILE> | numaverage [-dhiIlmMV] (Input on STDIN from pipeline.) numaverage [-dhiIlmMV] (Input on STDIN. Use Ctrl-D to stop.) DESCRIPTION
By default numaverage will determine the average from all numbers on input. Other options allow you to find the mode and median. OPTIONS
-i Only return the integer portion of the final sum. -I Only return the decimal portion of the final sum -m Find the mode (most occuring) of the list of numbers, or when there's more than one mode, the first completed mode. -M Find the median (middle number) of the list of numbers. -l When finding the median and the count of numbers in the set is even, use the lower middle number instead of the upper middle number. -h Help: You're looking at it. -V Increase verbosity. -d Debug mode. For developers SEE ALSO
numbound(1), numinterval(1), numnormalize(1), numgrep(1), numprocess(1), numsum(1), numrandom(1), numrange(1), numround(1) COPYRIGHT
numaverage is part of the num-utils package, which is copyrighted by Suso Banderas and released under the GPL license. Please read the COPYING and LICENSE files that came with the num-utils package Developers can read the GOALS file and contact me about providing submitions or help for the project. MORE INFO
More info on numaverage can be found at: http://suso.suso.org/programs/num-utils/ perl v5.10.1 2009-10-31 NUMAVERAGE(1)
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