• Story Name: Grocery Shopping
  • Story Topics: Consumer,
  • Datafile Name: Shoppers
  • Methods: Summary Statistics,
  • Abstract:

    A marketing consultant observed 50 consecutive shoppers at a grocery store, and recorded how much money each shopper spent in the store. Descriptive statistics such as mean, median, standard deviation, and interquartile range, as well as graphical methods such as boxplots or dotplots, may be used to summarize these data. A histogram and a normal probability plot show that, although the distribution of the data is slightly skewed with a long right tail, the data are approximately Normally distributed.

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