Go Premium for a chance to win a PS4. Enter to Win

x
?
Solved

standard deviation raised to the power 2 silly question

Posted on 2011-03-01
3
Medium Priority
?
300 Views
Last Modified: 2012-06-27
STD = SQRT( (Xi - Mean(X))^2/(n-1)

i want to raise it to the power 2. lol i forgot how to do it. i know it's silly but it just can't come to my mind
will it be become (Xi - Mean(X)**4/(n-1)**2????
0
Comment
Question by:dadadude
  • 2
3 Comments
 
LVL 10

Expert Comment

by:abbright
ID: 35006718
There is a mismatch in the brackets in your formula. But anyway: If you raise a square root to power 2 this gives that which is in / under the square root, so
sqrt ((Xi - Mean(X))^2/(n-2)) raised to power 2 is (Xi-Mean(X))^2/(n-2).
0
 
LVL 10

Accepted Solution

by:
abbright earned 2000 total points
ID: 35006736
Sorry, it is  (Xi-Mean(X))^2/(n-1) of course.
0
 

Author Closing Comment

by:dadadude
ID: 35006764
oh ok thank u abb. I was a little confused.
sorry about the brackets.
Thank you for your help.
0

Featured Post

Concerto's Cloud Advisory Services

Want to avoid the missteps to gaining all the benefits of the cloud? Learn more about the different assessment options from our Cloud Advisory team.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

How to Win a Jar of Candy Corn: A Scientific Approach! I love mathematics. If you love mathematics also, you may enjoy this tip on how to use math to win your own jar of candy corn and to impress your friends. As I said, I love math, but I gu…
Have you ever thought of installing a power system that generates solar electricity to power your house? Some may say yes, while others may tell me no. But have you noticed that people around you are now considering installing such systems in their …
This is a video describing the growing solar energy use in Utah. This is a topic that greatly interests me and so I decided to produce a video about it.
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…
Suggested Courses

886 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question