Results 1 to 5 of 5

Math Help - Drawing a Venn diagram

  1. #1
    Newbie
    Joined
    Feb 2009
    From
    Georgia, USA
    Posts
    3

    Drawing a Venn diagram

    Word problem: in a recent survey of 160 third graders, 28 were gymnasts, 60 were dancers, 99 were swimmers,13 were gymnasts and dancers, 21 were dance and swimming,19 were swimming and gym. 9 werre all three.Draw a Venn Diagram.
    a) how many were in dance OR swimming? my answer 123
    b) yow many were in at least 1 activity? my answer 5
    c) how many were in at most two activities? 151
    I don't know how to draw the venn diagram on this site! Can anyone check my answers?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570
    Thanks
    1

    Venn diagram

    Hello j-ram
    Quote Originally Posted by j-ram View Post
    Word problem: in a recent survey of 160 third graders, 28 were gymnasts, 60 were dancers, 99 were swimmers,13 were gymnasts and dancers, 21 were dance and swimming,19 were swimming and gym. 9 werre all three.Draw a Venn Diagram.
    a) how many were in dance OR swimming? my answer 123
    b) yow many were in at least 1 activity? my answer 5
    c) how many were in at most two activities? 151
    I don't know how to draw the venn diagram on this site! Can anyone check my answers?
    See attached diagram.

    I make the answers (a) 160 - 22 = 138 (assuming that this is an inclusive OR); (b) 160 - 17 = 143; (c) 160 - 9 = 151

    Grandad
    Attached Thumbnails Attached Thumbnails Drawing a Venn diagram-temp.jpg  
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Feb 2009
    From
    Georgia, USA
    Posts
    3

    Venn Diagram (thanks Grandad)

    I really appreciate the help. I had 39 where you have 35 for dancing.
    I had 8 where you have 12 for swimming and dance.
    I had 72 where you have 69, and I had nothing in the U.
    Close only counts in horse shoes - right?
    Please tell me where you found the venn? Is it something I can do?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    Grandad's Avatar
    Joined
    Dec 2008
    From
    South Coast of England
    Posts
    2,570
    Thanks
    1

    Venn diagram

    Hello j-ram
    Quote Originally Posted by j-ram View Post
    I really appreciate the help. I had 39 where you have 35 for dancing.
    I had 8 where you have 12 for swimming and dance.
    I had 72 where you have 69, and I had nothing in the U.
    I'm not quite sure how you got your answers. Do you understand how I got mine? I started right in the middle (9), then work outwards - there are 21 doing dance and swimming, so subtract 9 from 21, to get 12, and so on.
    Close only counts in horse shoes - right?
    I don't understand what you mean here. Perhaps we use different words for this!
    Please tell me where you found the venn? Is it something I can do?
    I drew the Venn diagram in CorelDraw, and saved it as a .jpg, before using the 'Manage Attachments' button to attach it to the posting.

    Grandad
    Follow Math Help Forum on Facebook and Google+

  5. #5
    Newbie
    Joined
    Feb 2009
    From
    Georgia, USA
    Posts
    3

    working from inside out on Venn

    I have not heard the professor say work from the inside out. That did help. I just plugged in numbers and tried to make them "work". Do you play horseshoes in UK? If a horseshoe gets close to the stake, we let it count as a ringer. I do not know if this is a real rule, or not! My pun refered to my numbers being "close" to yours. Thank-a-million!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. venn diagram
    Posted in the Discrete Math Forum
    Replies: 4
    Last Post: August 24th 2009, 08:57 PM
  2. Venn diagram
    Posted in the Discrete Math Forum
    Replies: 2
    Last Post: April 10th 2009, 07:30 AM
  3. Venn Diagram
    Posted in the Statistics Forum
    Replies: 1
    Last Post: July 24th 2008, 07:21 PM
  4. venn diagram
    Posted in the Discrete Math Forum
    Replies: 1
    Last Post: June 21st 2007, 07:13 PM
  5. Venn diagram
    Posted in the Math Topics Forum
    Replies: 1
    Last Post: May 19th 2007, 11:47 AM

Search Tags


/mathhelpforum @mathhelpforum