A data set contains 6, 7, 8, 9 and 40. What happens to the range when the value 40 is removed?

Объяснение

With 40 included the range is 40 - 6 = 34, and once 40 is gone the largest value is 9, so the range becomes 9 - 6 = 3. Expecting only a small change assumes every value contributes a little to the range, but a range rests on the two end values alone, so removing an extreme one can shrink it dramatically.