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3. (Empirical Exercise) You need to use R to address the following em pirical questions. Use the inbuilt dataset USArrests by typing > data(USArrests) in

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3. (Empirical Exercise) You need to use R to address the following em pirical questions. Use the inbuilt dataset \"USArrests\" by typing > data(\"USArrests\") in your R console. In your variable space, now you have a data frame \"USArrests\" which contains statistics about violent crime rates by US state. (a) Compute means and variances of \"Murder\

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