A parity bit is an additional binary digit that takes on the value zero or one to satisfy the requirement for parity in a binary number. The parity must be specified as even or odd.
... average household size is 3.21 and the average family size is 3.51.
In the town the population is spread out with 29.5% under the age of 18, 6.7% from 18 to 24, 33.6% ...