A: In a scientific experiment, a confounding variable is a secondary, changing condition that muddies the experimenter's hypothesized inference between cause and effect. Researchers must be meticulous about experiment design to control for confounding variables and to protect the integrity of their findings.
Fairfax County, officially the County of Fairfax, is a county in the Commonwealth of Virginia. As of the 2010 census, the population was 1,081,726, in 2014, the population was estimated to be 1,118,883, making it the most populous jurisdiction in the Commonwealth of Virginia, with 13.6% of Virginia's population.lexandria County was returned to Virginia in 1846, reduced in size by the secession of the independent city of Alexandria in 1870, and renamed Arlington County in 1920. The Fairfax County town of Falls Church became an independent city in 1948.
Sponsored Topics. The City of Fairfax is an independent city forming an enclave within the confines of Fairfax County, in the Commonwealth of Virginia. Although politically independent of the surrounding county, the City is nevertheless the county seat. Situated in the Northern Virginia region, Fairfax forms part of the Washington Metropolitan Area. The Bureau of Economic Analysis combines Fairfax and the city of Falls Church with Fairfax County for statistical purposes.