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Chapter 2- Statistics for Business and Economics

Chapter 2- Statistics for Business and Economics - LEARNING...

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2-1 LEARNING OBJECTIVES LO1. Organize qualitative data into a frequency table . LO2. Present a frequency table as a bar chart or a pie chart . LO3 Organize quantitative data into a frequency distribution. LO4 Present a frequency distribution for quantitative data using histograms, frequency polygons, and cumulative frequency polygons . Primary goal is presentation of data in easy to understand visual ways…
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2-2 Summary of the Characteristics for Levels of Measurement
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2-3 Why Know the Level of Measurement of a Data Set? n The level of measurement of the data dictates the calculations that can be done to summarize and present the data. n To determine the statistical tests that should be performed on the data
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2-4 Simple visual representation…
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2-5 Frequency Table FREQUENCY TABLE A grouping of qualitative data into mutually exclusive classes showing the number of observations in each class. Preference for pop stars: Lady Gaga 80 Justin Bieber 19 Choices make me barf 1 No Answer 0
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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.
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