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Calculating average

 
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# 1  
Old 03-12-2014
Calculating average
Hi

I have file like below

Code:
111,victor,48,12,36
342,Peter,54,58,30
476,Scott,25,36,48
567,Patty,74,17,95

I have written below code to calcualte avereage for every id

Code:
Victor = 48+12+36/3


Code:
#!/bin/ksh
/usr/xpg4/bin/awk '
BEGIN {FS=","} {sum=0; n=0;i=3
     if (i<=5)
i++;
 sum+=$i;
++n
print $0,"sum:"sum,"count:"n,"avg:"sum/n}' |sed 1d filename.txt

When I compile getting below O/P

Code:
111,victor,48,12,36
342,Peter,54,58,30
476,Scott,25,36,48
567,Patty,74,17,95

how I can get avarage
# 2  
Old 03-12-2014
Code:
$ awk '
> BEGIN {FS=","} {sum=0; n=0;i=3
>      while (i<=5) {
>  sum+=$i;
> i++;
> ++n }
> print $0,"sum:"sum,"count:"n,"avg:"sum/n}' file
111,victor,48,12,36 sum:96 count:3 avg:32
342,Peter,54,58,30 sum:142 count:3 avg:47.3333
476,Scott,25,36,48 sum:109 count:3 avg:36.3333
567,Patty,74,17,95 sum:186 count:3 avg:62

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