Results 1 to 2 of 2

Math Help - standard deviation and mean deviation

  1. #1
    pawan6719
    Guest

    standard deviation and mean deviation

    Q::it Is Asked To Show That The Standard Deviation For Normal Distribution Is Approximately 25% More Than The Mean Deviation

    I Have Absolutely No Idea As To Proceed
    Can I Have A Descriptive Solution
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by pawan6719 View Post
    Q::it Is Asked To Show That The Standard Deviation For Normal Distribution Is Approximately 25% More Than The Mean Deviation

    I Have Absolutely No Idea As To Proceed
    Can I Have A Descriptive Solution
    You need to work with the standard normal distribution, and so show that:

    \frac{1}{\sqrt{2\pi}} \int_{-\infty}^{\infty} |x|e^{-x^2/2}~dx \approx 1.25

    RonL
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Standard Deviation
    Posted in the Statistics Forum
    Replies: 4
    Last Post: September 8th 2010, 03:05 AM
  2. Standard deviation
    Posted in the Advanced Statistics Forum
    Replies: 1
    Last Post: May 16th 2010, 12:16 PM
  3. Replies: 5
    Last Post: May 18th 2009, 04:14 AM
  4. i need standard deviation help
    Posted in the Statistics Forum
    Replies: 2
    Last Post: February 22nd 2008, 05:03 PM
  5. The mean and standard deviation
    Posted in the Advanced Statistics Forum
    Replies: 3
    Last Post: February 17th 2008, 08:15 PM

Search Tags


/mathhelpforum @mathhelpforum