level of measurement wikipedia

Measures of gender equality

They do not measure the relative position and status of women in relation to men, but only measure absolute levels of income per capita or human development. Mills (2010) goes as far as to say that "although they are often touted as key measures of gender (in)equality, most experts agree that they are in fact not measures of gender inequality at all."

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List of unusual units of measurement

Horizontal pitch. Horizontal pitch (HP) is a unit of length defined by the Eurocard printed circuit board standard used to measure the horizontal width of rack mounted electronic equipment, similar to the rack unit (U) used to measure vertical heights of rack mounted equipment. One HP is 0.2 inches (1/5") or 5.08 millimetres wide.

Ancient Greek units of measurement

Ancient Greek units of measurement varied according to location and epoch. Systems of ancient weights and measures evolved as needs changed; Solon and other lawgivers also reformed them en bloc . [ citation needed ] Some units of measurement were found to be convenient for trade within the Mediterranean region and these units became increasingly …

Measurement uncertainty

Measurement uncertainty. In metrology, measurement uncertainty is the expression of the statistical dispersion of the values attributed to a measured quantity. All measurements are subject to uncertainty and a measurement result is complete only when it is accompanied by a statement of the associated uncertainty, such as the standard deviation.

-(Levels of Measurement)

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Ancient Egyptian units of measurement

The ancient Egyptian units of measurement are those used by the dynasties of ancient Egypt prior to its incorporation in the Roman Empire and general adoption of Roman, Greek, and Byzantine units of measurement.The units of length seem to have originally been anthropic, based on various parts of the human body, although these were standardized …

Level of measurement

Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. Psychologist Stanley Smith Stevens developed the best-known classification with four levels, or scales, of measurement: nominal, ordinal, interval, and ratio .

Statistical data type

Statistical data type. In statistics, groups of individual data points may be classified as belonging to any of various statistical data types, e.g. categorical ("red", "blue", "green"), real number ( 1.68, −5, 1.7 × 10+6 ), odd number (1,3,5) etc. The data type is a fundamental component of the semantic content of the variable, and controls ...

Units of measurement in transportation

Passenger-distance is the distance (km or miles) travelled by passengers on transit vehicles; determined by multiplying the number of unlinked passenger trips by the average length of their trips. passenger-kilometre or pkm internationally; passenger-mile (or pmi ?) sometimes in the US; 1 pmi = 1.609344 pkm.

Talk:Level of measurement/Archive 1

Article states: Most measurement in psychology and other social sciences is at the ordinal level; for example attitudes and IQ are only measured at the ordinal level.. But Babbie''s specifically states that ''about the only interval measures commonly used in social scientifc research are constructed measures such as standarized intelligence tests'' (IQ).

List of measuring instruments

Time. Watch, a time measurement device. In the past, a common time measuring instrument was the sundial. Today, the usual measuring instruments for time are clocks and watches. For highly accurate measurement of time an atomic clock is used. Stopwatches are also used to measure time in some sports.

Measurement

The level of measurement is a taxonomy for the methodological character of a comparison. For example, two states of a property may be compared by ratio, difference, or ordinal …

pH

The measurement of pH in seawater is complicated by the chemical properties of seawater, and three distinct pH scales exist in chemical oceanography. In practical terms, the three seawater pH scales differ in their pH values up to 0.10, differences that are much larger than the accuracy of pH measurements typically required, in particular, in relation to the …

Theory of conjoint measurement

Hence the theory of conjoint measurement can be used to quantify attributes in empirical circumstances where it is not possible to combine the levels of the attributes using a side-by-side operation or concatenation. The quantification of psychological attributes such as attitudes, cognitive abilities and utility is therefore logically plausible.

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Unit of measurement

Units of measurement, Palazzo della Ragione, Padua. A unit of measurement, or unit of measure, is a definite magnitude of a quantity, defined and adopted by convention or by law, that is used as a standard for measurement of the same kind of quantity. [1] Any other quantity of that kind can be expressed as a multiple of the unit of measurement.

Levels of Measurement | SpringerLink

Four levels of measurement first crystallized by Stevens ( 1946) are generally recognized, though with some debate: 1. Nominal or categorical – in which individuals are placed in …

Levels of Measurement | Nominal, Ordinal, Interval and Ratio

There are 4 levels of measurement: Nominal: the data can only be categorized. Ordinal: the data can be categorized and ranked. Interval: the data can be categorized, ranked, and evenly spaced. Ratio: the data can be categorized, ranked, evenly spaced, and has a natural zero. Depending on the level of measurement of the variable, …

Lux

The lux (symbol: lx) is the unit of illuminance, or luminous flux per unit area, in the International System of Units (SI).[1][2] It is equal to one lumen per square metre. In photometry, this is used as a measure of the intensity, as perceived by the human eye, of light that hits or passes through a surface. It is analogous to the radiometric ...

Blood pressure

35094-2. Blood pressure ( BP) is the pressure of circulating blood against the walls of blood vessels. Most of this pressure results from the heart pumping blood through the circulatory system. When used without qualification, the term "blood pressure" refers to the pressure in a brachial artery, where it is most commonly measured.

Air quality index

An air quality index ( AQI) is an indicator developed by government agencies [1] to communicate to the public how polluted the air currently is or how polluted it is forecast to become. [2] [3] As air pollution levels rise, …

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Level of measurement

Level of measurement (LoM) is an important characteristic of data. The LoM determines what types of descriptive, graphical, and inferential statistical analyses …

Level of measurement

Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. Psychologist Stanley Smith Stevens …

Level of invention

These levels of invention are applied to solutions rather than problems requiring a system of solution. Also level of invention and the potential for innovation in any nation, geographical area or economic activity is as measurement in the concept of innovative capacity originally introduced by Prof. Suarez-Villa in 1990.[1]

Lumen (unit)

The lumen (symbol: lm) is the unit of luminous flux, a measure of the perceived power of visible light emitted by a source, in the International System of Units (SI). Luminous flux differs from power (radiant flux) in that radiant flux includes all electromagnetic waves emitted, while luminous flux is weighted according to a model (a "luminosity function") of …

Accuracy and precision

According to ISO 5725-1, accuracy consists of trueness (proximity of measurement results to the true value) and precision (repeatability or reproducibility of the measurement). A shift in the meaning of these …

System of units of measurement

System of units of measurement. A system of units of measurement, also known as a system of units or system of measurement, is a collection of units of measurement and rules relating them to each other. Systems of measurement have historically been important, regulated and defined for the purposes of science and commerce.

Level (optical instrument)

A level is an optical instrument used to establish or verify points in the same horizontal plane in a process known as levelling. It is used in conjunction with a levelling staff to establish the relative height or levels (the vertical separation) of objects or marks. It is widely used in surveying and construction to measure height differences ...

Level of measurement | Statista

The level of measurement expresses how quantifiable a value actually is, i.e., to what extent we can apply mathematical operations. We distinguish between four …

Level sensor

Hydrostatic pressure level sensors are submersible or externally mounted pressure sensors suitable for measuring the level of corrosive liquids in deep tanks or water in reservoirs. Typically, fluid level is determined by the pressure at the bottom of the fluid containment (tank or reservoir); the pressure at the bottom, adjusted for the density / specific gravity of …

Image resolution

Image resolution is the level of detail of an image. The term applies to digital images, film images, and other types of images. "Higher resolution" means more image detail. Image resolution can be measured in various ways. Resolution quantifies how close lines can be to each other and still be visibly resolved. Resolution units can be tied to ...

Level of measurement

Level of measurement or scale of measure is a classification that describes the nature of information within the values assigned to variables. [1] Psychologist Stanley Smith Stevens developed the best-known classification with four levels, or scales, of measurement: nominal, ordinal, interval, and ratio. ...

Blood alcohol content

5639-0, 5640-8, 15120-9, 56478-1. Blood alcohol content ( BAC ), also called blood alcohol concentration or blood alcohol level, is a measurement of alcohol intoxication used for legal or medical purposes. [1] BAC is expressed as mass of alcohol per volume of blood. In the US and many international publications, BAC levels are written as a ...

Body fat percentage

In males, mean percentage body fat ranged from 23% at age 16–19 years to 31% at age 60–79 years. In females, mean percentage body fat ranged from 32% at age 8–11 years to 42% at age 60–79 years. But it is important to recognise that women need at least 9% more body fat than men to live a normal healthy life.

Intelligence quotient

e. An intelligence quotient ( IQ) is a total score derived from a set of standardised tests or subtests designed to assess human intelligence. [1] The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated ...

(しゃくどすいじゅん、: Level of measurement )とは、にりった、その、あるいはそれによりられたデータを、それらがするのにづき・にするである。 スタンレー・スティーヴンズ(Stanley Smith Stevens)が1946に「 ...

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