Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

Calculating weighted average

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Calculating weighted average
# 1  
Old 07-05-2011
Calculating weighted average
Dear all,

i have 200 values in a file. How can i calculate a weighted average and output into a new file avg.dat?
INPUT:
file1.dat
1.3453
2.434
2.345
.....

OUTPUT:
avg.dat
file1: 1.762

Thanks.
Po
# 2  
Old 07-05-2011
just an average is easy, but weighted average implies different values count for different proportions of the outcome. What decides that? Weighted how?
# 3  
Old 07-05-2011
i scrapped the idea!
# 4  
Old 07-05-2011
Code:
awk '{s+=$1;++n}END{f="avg.dat";print s/n > f}' file1.dat

---------- Post updated at 12:26 PM ---------- Previous update was at 12:25 PM ----------

Code:
awk '{s+=$1;++n}END{f="avg.dat";print FILENAME": " s/n > f}' file1.dat

---------- Post updated at 12:29 PM ---------- Previous update was at 12:26 PM ----------

Code:
[ctsgnb@shell ~/sand]$ ls *.dat
file1.dat
[ctsgnb@shell ~/sand]$ cat file1.dat
1.3453
2.434
2.345
[ctsgnb@shell ~/sand]$ awk '{s+=$1;++n}END{f="avg.dat";print FILENAME": " s/n > f}' file1.dat
[ctsgnb@shell ~/sand]$ ls *.dat
avg.dat file1.dat
[ctsgnb@shell ~/sand]$ cat avg.dat
file1.dat: 2.04143

 
Login or Register to Ask a Question

Previous Thread | Next Thread

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Calculating average from files

I have some files with the following contents.I would like to calculate average of fifth column. How can I do this with awk? file1 cat 95.9 152 78.0 17.9 rat 67.1 153 36.5 30.6 dog 81.4 154 68.1 13.3 dog 92.0 155 55.5 36.5 rat 73.8 156 23.9 49.9 file2 rat... (4 Replies)
Discussion started by: avina
4 Replies

2. Shell Programming and Scripting

Python Script Calculating Average

Can anyone explain what each line of the code does and how it works? I have no experience with python so I am not sure how the arrays and such work. I found this code while looking through the forums. f = open("exams","r") l = f.readline() while l: l = l.split(" ") values = l ... (22 Replies)
Discussion started by: totoro125
22 Replies

3. UNIX for Dummies Questions & Answers

Calculating average

Hi I have file like below 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 Victor = 48+12+36/3 #!/bin/ksh /usr/xpg4/bin/awk ' BEGIN {FS=","} {sum=0; n=0;i=3 (1 Reply)
Discussion started by: stew
1 Replies

4. Shell Programming and Scripting

Calculating the average of scores

Hi I have 2 files file1 aac 23 25 aac 87 90 aac 33 67 file2 23 0.9 24 0.8 25 0.4 ........ 67 0.55 ........ I want to get output as (11 Replies)
Discussion started by: anurupa777
11 Replies

5. Shell Programming and Scripting

Calculating average with awk

I need to find the average from a file like: data => BW:123 M:30 RTD:0 1 0 1 0 0 1 1 1 1 0 0 1 1 0' data => BW:123 N:30 RTD:0 1 0 1 0 0 1 1 1 1 0 0 1 1 0' data => BW:123 N:30 RTD:0 1 0 1 0 0 1 1 1 1 0 0 1 1 0' data => BW:123 N:30 RTD:0 1 0 1 0 0 1 1 1 1 0 0 1 1 0' data => BW:123 N:30 RTD:0 1... (4 Replies)
Discussion started by: Slagle
4 Replies

6. Shell Programming and Scripting

Calculating average of 100 different files of same size

Hey guys..... I have many files (lets say 100 or more) of same size, and I want to create a new output file and calculate the average of first row fifth column in all files and print it in first row of output file, then 2nd row fifth col in all 100 files and print it in 2nd row of output... (1 Reply)
Discussion started by: CAch
1 Replies

7. UNIX for Dummies Questions & Answers

Calculating average

Hi, i have 12 float variables in a bash file and i want to calculate the average of them. Can any body help? (6 Replies)
Discussion started by: limadario
6 Replies

8. UNIX for Dummies Questions & Answers

Calculating the Number of Rows and Average

Hi All I like to know how can we calculate the number of rows and the average of the values present in the file. I will not know what will be the rowcount, which will be dynamic in nature of the file. eg. 29 33 48 30 28 (6 Replies)
Discussion started by: pk_eee
6 Replies

9. Shell Programming and Scripting

Calculating the average

This is the cronjob ---------------------- root@a7germ:/home/paxtemp > crontab -l|grep test 57 * * * * /home/paxtemp/test_1.sh 0,5,10,15,20,25,30,35,40,45,50,55 * * * * /home/paxtemp/test.sh root@a7germ:/home/paxtemp > This is the contents of test.sh script... (2 Replies)
Discussion started by: kekanap
2 Replies
Login or Register to Ask a Question