Lecture 2 - Charts&Graphs Lecture2 LearningObjectives...

Info icon This preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
Charts & Graphs Lecture 2
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Learning Objectives Recognise  the difference between grouped  and ungrouped data Construct  a frequency distribution Construct  a histogram, a frequency polygon,  an ogive, a pie chart, a stem and leaf plot, a  Pareto chart, and a scatter plot
Image of page 2
Ungrouped Versus  Grouped Data Ungrouped data   are also called Grouped data   A frequency distribution is
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Example of  Ungrouped Data Monthly unemployment rates  for Australia over 40 months  from 2002 to 2005 7.1 7.0 6.9 6.7 6.7 6.6 6.5 6.5 6.4 6.4 6.4 6.4 6.5 6.5 6.5 6.5 6.5 6.4 6.3 6.2 6.1 6.0 5.9 5.9 5.8 5.8 5.8 5.8 5.7 5.7 5.6 5.5 5.4 5.3 5.2 5.2 5.1 5.1 5.1 5.1
Image of page 4
Frequency Distribution of Monthly  Unemployment Rates for  Australia Class Interval Frequency (5.0, 5.4] (5.4, 5.8] (5.8, 6.2] (6.2, 6.6] (6.6, 7.0] (7.0, 7.4]
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Data Range largest smallest 7.1 7.0 6.9 6.7 6.7 6.6 6.5 6.5 6.4 6.4 6.4 6.4 6.5 6.5 6.5 6.5 6.5 6.4 6.3 6.2 6.1 6.0 5.9 5.9 5.8 5.8 5.8 5.8 5.7 5.7 5.6 5.5 5.4 5.3 5.2 5.2 5.1 5.1 5.1 5.1 Range = Largest- Smallest = =
Image of page 6
Number of Classes and  Class Width The number of classes should be between 5 and 15. Fewer than 5 classes More than 15 classes Class Width     (5.4, 5.8] means that the lower end is NOT included in this class  interval, but the upper end IS included Approximate Class Width =     = 0.33 2 6 Class Width = 0.4
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Class Midpoint 5.2   = 2 5.4   +   5.0   = 2 endpoint   class   ending + endpoint   class   beginning   =    Midpoint Class ( 29 5.2   = 0.4 2 1   +   5.0   =  width class 2 1   +   point   beginning   class   =    Midpoint Class
Image of page 8
Relative Frequency     Relative Relative Class Interval Frequency Frequency (5.0, 5.4]  8   .200 (5.4, 5.8]  8   .200 (5.8, 6.2]  5    (6.2, 6.6] 14    (6.6, 7.0]  4    (7.0, 7.4]  1   .025  Total  40 1.000 = 40 8 = 40 8
Image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Cumulative Frequency                               Cumulative Class Interval Frequency Frequency (5.0, 5.4] 8 8 (5.4, 5.8] 8 16 (5.8, 6.2] 5 21 (6.2, 6.6] 14 (6.6, 7.0] 4 (7.0, 7.4]  1   Total 40 8 + 8 16 + 5
Image of page 10
Class Midpoints, Relative Frequencies,  and Cumulative Frequencies                 Relative          Cumulative Class Interval Frequency Midpoint Frequency Frequency (5.0, 5.4] 8 (5.4, 5.8] 8 (5.8, 6.2] 5 (6.2, 6.6] 14 (6.6, 7.0] 4 (7.0, 7.4]  1                          Total 40 1.00
Image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern