Concept explainers
The Social Security Administration maintains an actuarial life table that contains the probability that a person in the United States will die (http://www.ssa.gov/OACT/STATS/table4c6.html). The death probabilities from this table for 2009 are stored in the file LifeDeathProbability.txt that is included with the book’s source code. There are three values for each row the age, death probability for a male, and death probability for a female. For example, the first five lines are:
0 0.006990 0.005728
1 0.000447 0.000373
2 0.000301 0.000241
3 0.000233 0.000186
4 0.000177 0.000150
This says that a 3-year-old female has a 0 000186 chance of dying that year
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