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Section 7.5 R Commands Used in This Chapter
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length() The number of elements in a vector
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mean() The arithmetic mean or average of a set of values
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quantile() Calculates cut points based on percents/proportions
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sample() Chooses elements at random from a vector
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sd() Calculates standard deviation
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replicate() Runs an expression/calculation many times
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sqrt() Calculates square root
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summary() Summarizes contents of a vector
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