The variance of a constant is zero. Adding a constant value, c, to a random variable does not change the variance, because the expectation (mean) increases by the same amount. Multiplying a random variable by a constant increases the variance by the square of the constant.
Panama City is a city and the county seat of Bay County, Florida, United States. Located along U.S. Route 98, it is the largest city between Tallahassee and Pensacola.
Guide to Panama City Florida. The History of Panama City. The history of Bay County Bay County was established from Washington County in 1913 and named for St. Andrews Bay, which borders the county. During World War II Panama City developed as a shipbuilding and industrial center.