Stepwise
Start practisingPractise

NECO 2023 · Paper 1 · Q49

Calculate the mean deviation of the scores 4, 5, 3, 2, 1.

Worked solution (try it first)
  1. The scores add up to 15, so the mean is 3.
  2. The distances from 3 are 1, 2, 0, 1 and 2, which add up to 6.
  3. The mean deviation is 65=1.2\frac65 = 1.2, option A.

Report a problem with this question