Question

Which of the mean,median and mode of a list of numbers must always appear as one of the numbers in the list ?

Answer 1

The mode must always be a number in a list of numbers.

Explanation:

The mode is the value which occurs most frequently in the list; as such, it must be in the list.

The median is the central value in the list except if the list contains an even number of values, then the median is the average of the two central values (in which case it might not be an actual number in the list).

The mean is simply the arithmetic average of the list numbers and as such may not be any actual value in the list.