CHAPTER 6Descriptive Statistics and Data Displays
Purpose of these tools
To provide basic information about the distribution and properties of a set of data
Deciding which tool to use
• Statistical term conventions, p. 105, covers standards used for symbols and terminology in statistical equations. Review as needed.
• Measures of Central Tendency, p. 106, covers how to calculate mean, median, and mode. Calculate these values manually for any set of continuous data if not provided by software.
• Measures of Spread, p. 108, reviews how to calculate range, standard deviation, and variance. You will need these calculations for many types of statistical tools (control charts, hypothesis tests, etc.).
• Box plots, p. 110, describes one type of chart ...
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