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.
Panama is located in Central America, bordering both the Caribbean Sea and the Pacific Ocean, between Colombia and Costa Rica. It mostly lies between latitudes 7Â° and 10Â°N, and longitudes 77Â° and 83Â°W (a small area lies west of 83Â°). Its location on the Isthmus of Panama is strategic.