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Statistics 3502/6304 Prof. Eric A. Suess Chapter 1

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The language of Statistics Knowing the vocabulary used in Statistics is sometimes difficult. The reason why is because of the use of common words that are in the dictionary as technical terms. Examples: mean, variation, correlation, sample, population, random, hypothesis, confidence, and the list goes on.

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The language of Statistics We need to keep a list of the vocabulary so we understand what is being asked in Statistics related questions. Start with sample and populcation

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The language of Statistics Population: the set of all measurements of interest Sample: any subset of measurements selected from the population

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Example Problems 1.Monitoring quality of a lightbulb manufacturing facility. This is an example where Quality Control/6 Sigma is used. 2.Relationship between quitting smoking and gaining weight. This is an example of Medical Research. 3.What effect does nitrogen fertilizer have on wheat production? This is an example of Agricultural Research. 4.Determining public opinion toward a question, issue, product, or candidate. This is an example of Polling.

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Gallop Poll The Gallop Organization is one of the long standing companies that does Public Opinion Polling and other Polling. Gallop Poll on wikipedia Gallop website

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Why study Statistics? Find the reference to the Utts paper. jstor in the library, see Statistics and locate the American Statistician, May 2003 Utts, What Educated Citizens Should Know About Statistics and Probability.

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