Notes - Chapter 02 - MGMT 2340 Section W01 Business Statistics I Instructor E Mark Leany contact via Blackboard online.uen.org alternately

Notes - Chapter 02 - MGMT 2340 Section W01 Business...

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MGMT 2340 Section W01 Business Statistics I Instructor: E. Mark Leany contact via Blackboard online.uen.org alternately: [email protected] Chapter 2 Describing Data: Frequency Tables, Frequency Distributions, and Graphic Presentation 21
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GOALS - Chapter 2 1. Organize qualitative data into a frequency table . 2. Present a frequency table as a bar chart or a pie chart . 3. Organize quantitative data into a frequency distribution . 4. Present a frequency distribution for quantitative data using histograms , frequency polygons , and cumulative frequency polygons . 21 Frequency Table FREQUENCY TABLE A grouping of qualitative data into mutually exclusive classes showing the number of observations in each class. 22
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Bar Charts BAR CHART A graph in which the classes are reported on the horizontal axis and the class frequencies on the vertical axis. The class frequencies are proportional to the heights of the bars. 23 Pie Charts PIE CHART A chart that shows the proportion or percent that each class represents of the total number of frequencies. 24
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Pie Chart Using Excel 25 Frequency Distribution FREQUENCY DISTRIBUTION A grouping of data into mutually exclusive classes showing the number of observations in each class. 27
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Relative Class Frequencies z Class frequencies can be converted to relative class frequencies to show the fraction of the total number of observations in each class. z A relative frequency captures the relationship between a class total and the total number of observations.
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  • Spring '11
  • Leany
  • Frequency, Frequency distribution, Bar chart, Histogram, Summary statistics

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