Alpha (Α α) is the first letter of the Greek alphabet and has a numeric value of 1.
The lower-case letter α is used as a symbol for:
See also: alpha
... 26.8% from 25 to 44, 27.7% from 45 to 64, and 19.9% who are 65 years of age or older. The median age is 43 years. For every 100 females there are 102.7 males. For every ...