Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Reading bar chart with standard deviation

  1. Aug 18, 2014 #1

    Maylis

    User Avatar
    Gold Member

    Hello,

    I don't know how the figure on the image posted works. If a grade is averaged at a B, which does this figure indicate my letter grade is? Is each box a standard deviation?
     

    Attached Files:

  2. jcsd
  3. Aug 19, 2014 #2

    WWGD

    User Avatar
    Science Advisor
    Gold Member

    The boxes represent quartiles , i.e., 25 percentiles ; the bottom of the box is the 25th percentile, the middle is the 50 percentile, a.k.a the median, etc. so that each box covers 25 percentile points of the data See : http://en.wikipedia.org/wiki/Box_plot
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Reading bar chart with standard deviation
  1. The Warn Bar (Replies: 8)

  2. The bar fight! (Replies: 26)

  3. The Bar Joke (Replies: 9)

  4. Makeover Deviation (Replies: 24)

  5. Standardized Elephant (Replies: 14)

Loading...