1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Find the median

  1. Aug 27, 2014 #1
    1. The problem statement, all variables and given/known data

    vown55.png

    Attempt :


    I think I am interpreting the graph wrongly, the median for the Number of hours studied

    should be 3 since only There are people who studied from 1~5 hrs,

    and for Number of hours slept it should be (7+6)/2 = 6.5 since people only slept for 4~9 hrs .

    I am not sure because the answer is wrong. Please guide me
     
  2. jcsd
  3. Aug 27, 2014 #2

    ehild

    User Avatar
    Homework Helper
    Gold Member

    How is median defined?

    ehild
     
  4. Aug 27, 2014 #3
    Median would be the middle number of a set of numbers that are in order of ascending magnitude.
     
  5. Aug 27, 2014 #4

    ehild

    User Avatar
    Homework Helper
    Gold Member

    So, in case of hours to study, you have 1 hour 4 times, 2 hours 4 times, 3 hours 3 times,4 hours twice, 5 hours twice. So the set of hours ordered in ascending magnitude is 1,1,1,1,2,2,2,2,3,3,3,4,4,5,5. What is the number at the middle?

    ehild
     
  6. Aug 27, 2014 #5
    Well the middle numbers is 2, and for the hours slept it would be 7 oh so the difference is 5.

    Thank you . I was being extremely stupid about reading the graph.
     
  7. Aug 27, 2014 #6

    ehild

    User Avatar
    Homework Helper
    Gold Member

    You are welcome:smile:

    ehild
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted