Quote:
Originally Posted by KayakerNC
Definitions
Median Age: The age that divides a population into two numerically equal groups; that is, half the people are younger than this age and half are older. It is a single index that summarizes the age distribution of a population.
According to data compiled by the Social Security Administration:
A man reaching age 65 today can expect to live, on average, until age 84.
A woman turning age 65 today can expect to live, on average, until age 86.
And those are just averages.
https://www.socialsecurity.gov/plann...expectancy.htm |
Typically, unless stated otherwise, the word "average" refer to the mean, not the median. There can be a big difference between the median and the mean.
For example, consider the following 5 numbers;
65, 65, 66, 90, and 90.
The median, which is the number that has half below it and half above it is 66.
The mean is the average of the 5 numbers i.e., (65+65+66+90+90)/5 = 76.