My Math Forum  

Go Back   My Math Forum > College Math Forum > Advanced Statistics

Advanced Statistics Advanced Probability and Statistics Math Forum


Reply
 
LinkBack Thread Tools Display Modes
May 23rd, 2013, 06:25 PM   #1
Newbie
 
Joined: May 2013

Posts: 3
Thanks: 0

Measures of dispersion: SD

Does this question make sense?

What percentages of subjects are included in 1 SD, 2 SDs, or 3 SDs from the mean?

That is all it says.
Xtal is offline  
 
May 24th, 2013, 12:42 PM   #2
Global Moderator
 
Joined: May 2007

Posts: 6,705
Thanks: 670

Re: Measures of dispersion: SD

In general no, since you need to know the distribution function. However in most statistics course the underlying distribution is assumed to be normal. In that case the answer is yes. Look up a table of the standard normal distribution (Google will give you many).
mathman is offline  
Reply

  My Math Forum > College Math Forum > Advanced Statistics

Tags
dispersion, measures



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Discrete variable and dispersion (task to solve) grayfox Algebra 3 February 19th, 2013 03:37 PM
Probability Measures master555 Advanced Statistics 0 February 16th, 2012 07:52 PM
Can someone help me find the dispersion or variability in... twobeatsoff Advanced Statistics 2 January 31st, 2012 10:43 PM
Outer Measures guynamedluis Real Analysis 4 September 15th, 2011 05:03 PM
Location and Dispersion symmetry Advanced Statistics 0 March 11th, 2007 06:32 AM





Copyright © 2019 My Math Forum. All rights reserved.