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.
The History of Panama City. 1  The history of Bay County Bay County was established from Washington County in 1913 and named for St. Andrews Bay, which borders the county. 2  The State Archives of Florida is the central repository for the archives of Florida's state government.