Source(s)

Book of Odds calculation based on data from Pew Research Center. Internet Usage Over Time 2007. Pew Internet & American Life Project. 2007.

National Population Estimates,Table 1: Annual Estimates of the Population by Five-Year Age Groups and Sex for the United States: April 1, 2000 to July 1, 2006 [Internet]. U.S. Census Bureau; Available from: http://www.census.gov/popest/national/asrh/NC-EST2006-asrh.html

Definitions

A person aged 18 or older.

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Odds Statement provided by Book of Odds Inc., http://www.bookofodds.com/content/view/full/585972 (Accessed: )

Rounding Rules

Odds more likely than 1 in 10, such as 1 in 3.42, are rounded to three significant digits. Odds less likely than 1 in 10, such as 1 in 420.4, are rounded to four significant digits. Trailing zeros after the decimal point are dropped for readability, even though they may still be significant.

Odds you'll see: 1 in 4.26; 14.5; 143; 5,230; 433,200

Odds you won't see: 1 in 2.412; 63.042; 425,242c