1. Welcome! Please take a few seconds to create your free account to post threads, make some friends, remove a few ads while surfing and much more. ClutchFans has been bringing fans together to talk Houston Sports since 1996. Join us!

Question about Standard Deviation

Discussion in 'BBS Hangout: Debate & Discussion' started by tchou, May 31, 2009.

  1. tchou

    tchou Contributing Member

    Joined:
    Apr 4, 2005
    Messages:
    725
    Likes Received:
    8
    Any stats guys out there that could help me out?

    Assuming I have an imperfect coin that lands on H 55% of the time and T 45% of the time. I want to know how to find the distribution of probability for a given number of heads or tails for N number of flips.

    For example: I've flipped the coin 8 times, how often will I get 3H and 5T, or 7H and 1T, etc?
     
  2. moestavern19

    moestavern19 Member

    Joined:
    Dec 8, 1999
    Messages:
    39,003
    Likes Received:
    3,638
    Tell your commie pinko 5H to stay the hell off my lawn or I'll exercise my 2nd amendment rights!
     
  3. Sweet Lou 4 2

    Sweet Lou 4 2 Contributing Member
    Supporting Member

    Joined:
    Dec 16, 2007
    Messages:
    37,717
    Likes Received:
    18,919

    Shouldn't you try to find someone other way to get help on your homework?
     
  4. wnes

    wnes Contributing Member

    Joined:
    Feb 19, 2003
    Messages:
    8,196
    Likes Received:
    19
    Unfair coin or not, this is an example of binomial distribution. I think you are given enough hint.
     
  5. orbb

    orbb Contributing Member

    Joined:
    Dec 9, 2002
    Messages:
    2,045
    Likes Received:
    16
    Unfortunate isn't it, how far we have come in this country. Teens without the fortitude or morals to do homework by themselves. Nowadays, they need internet magickery for every god**mn thing. I think its time to institute an involuntary 2 yr draft, knock some sense into these young whippersnappers.
     
  6. OrangeRowdy95

    OrangeRowdy95 Contributing Member

    Joined:
    Jul 15, 2007
    Messages:
    1,534
    Likes Received:
    22
    Use a TI calculator. Binompdf (n,p,k) will do the trick
     
  7. Northside Storm

    Northside Storm Contributing Member

    Joined:
    Dec 24, 2007
    Messages:
    11,262
    Likes Received:
    450
    Deviation is somewhere between -231 and +890, give or take 5000
     
  8. tchou

    tchou Contributing Member

    Joined:
    Apr 4, 2005
    Messages:
    725
    Likes Received:
    8
    It would be nice if I were still in school. =\

    Does this mean if I were to find the distribution of tails, is the below correct?
    n = sample size
    p = probability of tails (45%)
    k = number of times tails comes
     
  9. nkbearsnk

    nkbearsnk Member

    Joined:
    Oct 31, 2008
    Messages:
    109
    Likes Received:
    7
    Well done!!!
     
  10. Dairy Ashford

    Dairy Ashford Member

    Joined:
    May 20, 2002
    Messages:
    14,513
    Likes Received:
    1,840
    Are you angry at the internet, or students who ask for help? It's homework; not a paper or exam.
     
  11. KingCheetah

    KingCheetah Contributing Member

    Joined:
    Jun 3, 2002
    Messages:
    56,653
    Likes Received:
    48,745
  12. aussie rocket

    aussie rocket Member

    Joined:
    Apr 3, 2006
    Messages:
    6,096
    Likes Received:
    201

    You know its the offseason when ...
     

Share This Page

  • About ClutchFans

    Since 1996, ClutchFans has been loud and proud covering the Houston Rockets, helping set an industry standard for team fan sites. The forums have been a home for Houston sports fans as well as basketball fanatics around the globe.

  • Support ClutchFans!

    If you find that ClutchFans is a valuable resource for you, please consider becoming a Supporting Member. Supporting Members can upload photos and attachments directly to their posts, customize their user title and more. Gold Supporters see zero ads!


    Upgrade Now