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plugin-Chapter 1 Students - Where Do Data Come From?...

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CHAPTER 1 Where Do Data Come From?
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THOUGHT QUESTION In 1997, the Orlando Sentinel released the results of a poll in which more than 90 percent of those people who called in to the paper said that Orlando‟s NBA team, the Orlando Magic, should not re-sign its center, Shaquille O'Neal, for the amount of money he was asking. Based on this poll, would you conclude that over 90% of Orlando‟s entire population felt that the team should not re- sign Shaquille O‟Neal?
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WHAT IS STATISTICS? Using „data‟ to draw a conclusion about something unknown. Decision making in the presence of uncertainty.
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TALKING ABOUT DATA Individuals are the objects described by a set of data. Individuals may be people, but they may also be animals or things. A variable is any characteristic of an individual. A variable can take different values for different individuals. Name Gender Age Major JD M 22 History Turk M 23 Math Elliot F 22 Biology
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An economist put together a data set that describes the fuel economy of model year 2009 motor vehicles. The data set included: Make and model, Vehicle type, Transmission type, Number of cylinders, City MPG, and
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plugin-Chapter 1 Students - Where Do Data Come From?...

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