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WCU Average Time Citizens take to Travel to Work & Back Home Statistics Questions

 

The file P02_06.xlsx lists the average time (in minutes) it takes citizens of 379 metropolitan areas to travel to work and back home each day.

  1. a) Which measure of central tendency is most appropriate? b) What is the value of central tendency?
  2. a) What is a measure of variability that is useful for the data? b) What is the value of the measure?
  3. a) What is the value of the mean? b) What is the value of the standard deviation? c) According to the empirical rule, 95% of the observations will lie between ___ and ___. d) Is the empirical rule approximately correct?