Results 1 to 2 of 2

Math Help - Histogram Problem

  1. #1
    Newbie
    Joined
    Apr 2012
    From
    Ireland
    Posts
    4

    Question Histogram Problem *SOLVED*

    If someone could explain how he determined these intervals it would be extremely helpful!

    Problem 1: In an experiment, the life times of ball bearings were recorded (million revolutions).
    Consider the following 22 observations (sorted in order):


    17.88, 28.92, 33.00, 41.52, 42.12, 45.60, 48.48, 51.84, 51.96, 54.12,
    55.56, 67.80, 68.64, 68.88, 84.12, 93.12, 98.64, 105.12, 105.84, 127.92,
    128.04, 173.40.

    3. Construct the histogram for the data.

    To construct histogram one needs to group the data into a number of equally
    spaced intervals. For example, if decide for five intervals that have for the
    midpoints:
    33.4, 64.5, 95.6, 126.7, 157.9

    then the counts of the data in these bins are:
    7, 7, 5, 2, 1 < I don't understand where these came from aswell?
    Last edited by derpaderp; April 26th 2012 at 01:00 PM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Apr 2012
    From
    Ireland
    Posts
    4

    Re: Histogram Problem

    All is good I found a decent example online eventually! Histogram Construction << Here is the link if anyone else is stuck!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Histogram Problem
    Posted in the Algebra Forum
    Replies: 0
    Last Post: January 10th 2012, 11:21 AM
  2. Histogram problem
    Posted in the Statistics Forum
    Replies: 1
    Last Post: July 15th 2010, 10:44 PM
  3. mean from a histogram
    Posted in the Statistics Forum
    Replies: 1
    Last Post: March 31st 2010, 10:57 AM
  4. Histogram word problem
    Posted in the Statistics Forum
    Replies: 1
    Last Post: November 17th 2009, 03:32 PM
  5. HIstogram of Gaussian Random numbers Problem
    Posted in the Statistics Forum
    Replies: 0
    Last Post: March 24th 2008, 09:55 AM

Search Tags


/mathhelpforum @mathhelpforum