Rating

A rating is an evaluation or assessment of something, in terms of quality, quantity, or some combination of both.

Rating or rating system may also refer to:

Business and economics

 * Credit rating, estimating the credit worthiness of an individual, corporation or country
 * Ranally city rating system, a tool used to classify U.S. cities based on economic function
 * Telecommunications rating, the calculated cost of a phone call

Entertainment

 * Arbitron ratings or Nielsen Audio, consumer research on radio broadcasting audiences in the United States
 * Content rating, the suitability of a TV broadcast, movie, comic book, or video game to its audience
 * Motion picture rating system, categorizes films according to their suitability for adults and children
 * Television content rating systems, categorizes TV shows based on suitability for audiences
 * Video game content rating system, categorizes video games based on suitability for players
 * Audience measurement
 * Nielsen ratings, measuring viewership of United States television programs
 * Sports rating system, analyzes the results of sports competitions

Polling and opinion

 * Approval rating, the share of respondents to an opinion poll who approve of a politician
 * United States presidential approval ratings
 * Cardinal voting systems, where candidates for office are assigned scores ("ratings") independently from each other
 * Approval voting, a voting system that elects the candidate with the highest approval ratings
 * Rating (sociological group), a Ukrainian non-governmental polling organization
 * Reputation system, programs that allow users to rate each other in online communities

Technology and engineering

 * Rating (electrical), the voltage at which the appliance is designed to work
 * Fire-resistance rating, the duration for a passive fire protection to withstand a standard fire resistance test
 * Cetane rating, an indicator of the combustion speed of diesel fuel and compression needed for ignition
 * Octane rating, a standard measure of the performance of an engine or aviation fuel
 * Performance Rating, formerly a method of comparing x86 computer processors
 * Power rating, in electrical or mechanical engineering, the highest power input allowed to flow through particular equipment

Other uses

 * Rating (chess), estimate of the strength of a player, based on performance versus other players
 * Elo rating system, a rating system used in chess and in other sports and games
 * Rating (clinical trials), the process by which a human evaluator subjectively judges the response of a patient to a medical treatment
 * Rating (wine), score assigned by one or more wine critics to a wine
 * Rating site, a website designed for users to vote on or rate people or content
 * Naval rating, an enlisted member of a navy or coast guard defined by rank and job description.
 * Health care ratings, evaluations of health care
 * Rating system of the Royal Navy - an historic method to classify ship by how heavily armed they are. Applied to other navies vessels as a comparisor.