LB: "Average", when most people think of it, is the mean value (total value divided by number of entries). The median value is, if you sort the list from lowest to highest, the value 50% of the way along the list.

An illustration: you have five people, labeled A through E, with the following wealth:

A: $1
B: $2
C: $3
D: $4
E: $9990

The mean wealth of this group is $2000 ((1+2+3+4+9990)/5).

The median wealth of this group - the value halfway along the list - is $3.

@noelle one of the methods that the world Bank uses in order to tell us poverty is decreasing in the last decades

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