Adverse selection occurs when one party in a transaction has more information than the other, especially in insurance and finance-related activities.
For other uses of Ada, see Ada (disambiguation). Ada is a city in and the county seat of Pontotoc County, Oklahoma, United States. The population was 16,810 at the 2010 census, an increase of 7.1 percent from 15,691 at the 2000 census. The city was named for Ada Reed, the daughter of an early settler, and was incorporated in 1901.
A post office established in the county seat of Watonga, Oklahoma the same year as the land run. The Enid and Anadarko Railway and the Blackwell, Enid and Southwestern Railroad both ran lines through the county from 1901 to 1903. The Blaine County Courthouse was built in 1906.