mean

(redirected from express)
Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Idioms, Encyclopedia, Wikipedia.
Related to express: H&M

Mean

The expected value of a random variable. Arithmetic average of a sample.

Arithmetic Mean Average

An average calculated by adding the value of the points in a data set and dividing the sum by the number of data points. For example, suppose one wishes to calculate the average income of a country with exactly five people in it, and their incomes are $25,000, $26,000, $43,000, $70,000, and $72,000. It is calculated as:

($25,000 + $26,000 + $43,000 + $70,000 + $72,000) / 5 = $47,200.

A limitation to the arithmetic mean average is that it can be overly affected by extremes in either direction. For example, if one of the five persons in the country earns $100 billion per year, the arithmetic mean average income would be in the billions and would not accurately count the other four citizens. For this reason, many analysts use the median in conjunction with the arithmetic mean average. The arithmetic mean average is also called simply the mean.

mean

The average of a set of numbers.Contrast with median,which is the middle figure in a set of numbers,and mode,which is the value that appears most often in a set of numbers.

Example: A survey of home values in a neighborhood of nine houses obtained the following values:

The mean, or average, is the total of all values divided by 9, or $143,044.The median is the middle number when the numbers are all arranged from highest to lowest,which would be house 5, or $139,850.The mode is $139,000,because it is the number that appears most often.

References in periodicals archive ?
Designer Tristan Auer has been tasked with reimagining the Art Deco stylings and plant motifs of the original Orient Express carriages into a modern skyscraper.
Sources told Express News that at least 50% of coaches in Pakistan Railways are not functional.
The transactions will be processed through Equitys card management systems.The growth of the American Express merchant network in Kenya will also help to ensure American Express card members feel as comfortable using their cards in Kenya as anywhere else in the world, said Equity Bank group chief executive James Mwangi.
For August this year, HK Express said it flew 353,971 passengers, or a gain of 38.6 percent from year-ago number.
"Despite knowing the limits of its trademark and Express Homebuyers' extensive prior use, WBH began a campaign in July 2016 against Express' use of the phrase online.
Officials said except for certain categories such as the Rajdhani Express, Shatabdi Express and Sampark Kranti Express, trains are mainly named after landmarks such as rivers, mountains, regions, abstract qualities or some historical event.
The NVM Express Management Interface 1.0 specification defines an architecture and command set for out-of-band management of an NVM SSD over PCIe (using VDMs) and SMBus/I2C.
The Board also extended the earlier suspension of Express News from the PBA until conclusion of the show cause proceedings.The above was passed unanimously by the PBA Board.Robert Ruud is a technical adviser to the Norwegian Media Businesses' Association and has played a central role in introducing TAM meters in Norway.
BDO and American Express yesterday formally launched the American Express CashBack Credit Card.
The list includes Interpost, Jamku Express, Daily Trans Service, Pin Post, SPSR-Express, ElMirNur, Kyrgyz Express Post, Well Service, Logistic Solutions, Express Postal Services Company, Angara Courier, Trans Asia Express, PE Jumaliyev, Grand Motors Company, Yldam-Express.
M2 EQUITYBITES-April 7, 2015-FedEx to acquire TNT Express for EUR4.4bn in cash
TNT Express Sri Lanka sponsored the recent Annual General Meeting of the National Chamber of Exporters of Sri Lanka which was held at the Galadari Hotel.