問題文
A monthly revenue distribution is strongly right-skewed because a handful of enterprise contracts are far larger than the rest. Management asks for a single number that represents a typical customer. Which statistic is the more faithful summary and why?
選択肢
- The mode, because the most frequently occurring amount across the revenue distribution is by definition the typical customer.
- The mean, because it uses every observation and therefore represents the whole population more completely even when the distribution is skewed.
- The median, because it is determined by the middle of the ordered values and is not pulled by a few extreme amounts.
- The standard deviation, because it summarizes the spread for the top contracts and therefore describes where most customers sit.