Week1_Part_B - Week 1: Chapter 2, 1st Part Click to edit...

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Click to edit Master subtitle style Week 1: Chapter 2, 1st Part Descriptive Statistics: Visual and Numerical Descriptions
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Graphs and Charts The most common technique for describing data is to chart or graph the data set and examine these “pictures” for patterns Common Graphs and Charts: 1. Bar charts 2. Pie Charts 3. Line graphs (time lines, polygons) 4. Pareto Charts 5. Histograms (and Ogives) Chart Wizard in Excel
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Frequency Distributions and Histograms An essential technique for categorizing and summarizing a data set is the frequency distribution and its counterpart, the relative frequency distribution A histogram is a special type of bar chart that represents frequency for classes of data
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Procedure for Building Frequency Distributions and Histograms 1. Determine the number of classes need to present your data (the size and spread of the data set and the purpose of your presentation should be considered) 2. Determine the class width 3.
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This note was uploaded on 06/24/2011 for the course MATH 221 taught by Professor Bethdodson during the Spring '10 term at DeVry Chicago.

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Week1_Part_B - Week 1: Chapter 2, 1st Part Click to edit...

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