Four pupils scored 8, 3, 12 and 5 points. What is the median score? Enter the number of points. Give your answer as a decimal.
Bonne réponse
6.5 · Unités acceptées: points
Explication
Putting the scores in order gives 3, 5, 8 and 12, and the median of four values is the mean of the two central ones, so it is the mean of 5 and 8, which is 6.5 points. Averaging the two scores that happen to stand in the middle of the list as written, 3 and 12, gives 7.5 and skips the ordering step the median depends on.