Efficiency

Efficiency is the (often measurable) ability to avoid wasting materials, energy, efforts, money, and time in doing something or in producing a desired result. In a more general sense, it is the ability to do things well, successfully, and without waste. In more mathematical or scientific terms, it is a measure of the extent to which input is well used for an intended task or function (output). It often specifically comprises the capability of a specific application of effort to produce a specific outcome with a minimum amount or quantity of waste, expense, or unnecessary effort. Efficiency of course refers to very different inputs and outputs in different fields and industries.

Efficiency is very often confused with effectiveness. In general, efficiency is a measurable concept, quantitatively determined by the ratio of useful output to total input. Effectiveness is the simpler concept of being able to achieve a desired result, which can be expressed quantitatively but doesn't usually require more complicated mathematics than addition. Efficiency can often be expressed as a percentage of the result that could ideally be expected, for example if no energy were lost due to friction or other causes, in which case 100% of fuel or other input would be used to produce the desired result. This does not always apply, not even in all cases in which efficiency can be assigned a numerical value, e.g. not for specific impulse.

Studio apartment

A studio apartment, also known as a studio flat (UK), a self-contained apartment (Nigeria),efficiency apartment or bachelor apartment, is a small apartment which combines living room, bedroom, and kitchenette into a single room.

Design

These kinds of apartments typically consist of one large room which serves as the living, dining, and bedroom. Kitchen facilities may either be located in the central room, or in a small separate room, and the bathroom is usually in its own smaller room.

Cost

Studio, efficiency, and bachelor style apartments all tend to be the smallest apartments with the lowest rents in a given area, usually ranging around 300 to 450 square feet (25–45 square metres) in the United States, but considerably smaller in countries such as Japan, South Korea, and several European capitals.

Global variations

See also

References

Efficiency (basketball)

In professional basketball, the most commonly used statistical benchmark for comparing the overall value of players is called efficiency. It is a composite basketball statistic that is derived from basic individual statistics: points, rebounds, assists, steals, blocks, turnovers and shot attempts. The efficiency stat, in theory, accounts for both a player's offensive contributions (points, assists) and his defensive contributions (steals, blocks), but it is generally thought that efficiency ratings favor offense-oriented players over those who specialize in defense, as defense is difficult to quantify with currently tabulated statistics.

NBA

EFF

The NBA publishes online all the basic statistics recorded officially by the league. Individual player efficiency is expressed there by a stat referred to as 'efficiency' and abbreviated EFF. It is derived by a simple formula:

The current NBA Efficiency Leaders (EFF) list is here.

The formula was created by Kansas City sports reporter and statistician Martin Manley.