A quiz is a form of game or mind sport in which the players (as individuals or in teams) attempt to answer questions correctly. Quizzes are also brief assessments used in education and similar fields to measure growth in knowledge, abilities, and/or skills.
Quizzes are usually scored in points and many quizzes are designed to determine a winner from a group of participants - usually the participant with the highest score.
The OED2 has a citation from 1847 where the word appears: "She com back and quiesed us", which could be a clue to its origin. Quiz as a test could be a corruption of the Latin Qui es, meaning "Who are you?" American Heritage says it may be from the English dialect verb quiset, meaning to question. In any case it is probably from the same root as question and inquisitive.
There is a well-known but untrue story of the word "quiz", which says that in 1791 a Dublin theater owner named James Daly made a bet that he could introduce a word into the language within twenty-four hours. He then went out and hired a group of street urchins to write the word "quiz", which was a nonsense word, on walls around the city of Dublin. Within a day, the word was common currency and had acquired a meaning (since no one knew what it meant, everyone thought it was some sort of test) and Daly had some extra cash in his pocket. However, there is no evidence to support the story, and the term was already in use before the alleged bet in 1791.
There are also many online quizzes, many webmasters have quiz sections on their websites and forums, phpBB2 has one MOD (modification) which allows users to submit quizzes, this is the Ultimate Quiz MOD.
Most of the online quizzes are to be taken lightly. The results do not often reflect the true personality or relationship. They are also rarely psychometrically valid. However, they may occasion reflection on the subject of the quiz and provide a springboard for a person to explore his or her emotions, beliefs, or actions.