Quote:
Originally Posted by Average Guy
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.
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A period life table is based on the mortality experience of a population during a relatively short period of time. Here we present the 2009 period life table for the Social Security area population. For this table, the period life expectancy at a given age is the
average remaining number of years expected prior to death for a person at that exact age, born on January 1, using the mortality rates for 2009 over the course of his or her remaining life.
https://www.socialsecurity.gov/oact/STATS/table4c6.html