1 The weight of a fire fighter would be an example of a continuous variable; since a fire fighter's weight could take on any value between 150 and 250 pounds.  Suppose we flip a coin and count the number of heads. The number of heads could be any integer value between 0 and plus infinity.
A postal code is a series of letters and/or digits appended to a postal address for the purpose of sorting mail. Once postal codes were introduced, other applications became possible. In February 2005, 117 of the 190 member countries of the Universal Postal Union had postal code systems.
postal code in American English. Example sentences containing 'postal code'. East Kreuzberg, known locally by its old GDR postal code, was the heart of the city's youth culture. On the street outside, a man selling the Times of India claims to have memorized every postal code in Britain.