Swipe LEFT if the statistic is the mean, RIGHT if it is the median.

Exercise and reference answers

Items

1. Item

   Sum of all values divided by the count

   Answer

   Mean

2. Item

   Middle value of the sorted list

   Answer

   Median

3. Item

   Strongly affected by a single large outlier

   Answer

   Mean

4. Item

   Almost unchanged by a single outlier

   Answer

   Median

5. Item

   Half the sum of the two middle values for even count

   Answer

   Median

6. Item

   Computed as 19 285 for the 10 households

   Answer

   Mean

7. Item

   Computed as 19 500 for the 11 households

   Answer

   Median

8. Item

   Pulled up to 33 441 when outlier 175 000 joins

   Answer

   Mean

Left category

Mean

Right category

Median

Explanation