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33-463: [REDACTED] Look up scale  or scales in Wiktionary, the free dictionary. Scale or scales may refer to: Mathematics [ edit ] Scale (descriptive set theory) , an object defined on a set of points Scale (ratio) , the ratio of a linear dimension of a model to the corresponding dimension of the original Scale factor ,

66-471: A general interest in movies. Assume the film is very popular among the audience that views it, and that only those who feel most strongly about the film are inclined to rate the film online; hence the raters are all drawn from the devotees. This combination may lead to very high ratings of the film, which do not generalize beyond the people who actually see the film (or possibly even beyond those who actually rate it). Qualitative description of categories improve

99-418: A number which scales, or multiplies, some quantity Long and short scales , how powers of ten are named and grouped in large numbers Scale parameter , a description of the spread or dispersion of a probability distribution Feature scaling , a method used to normalize the range of independent variables or features of data Scale (analytical tool) Measurements [ edit ] Scale (map) ,

132-479: A rating scale from 0 to 100 in order to obtain "personalised film recommendations". In almost all cases, online rating scales only allow one rating per user per product, though there are exceptions such as Ratings.net , which allows users to rate products in relation to several qualities. Most online rating facilities also provide few or no qualitative descriptions of the rating categories, although again there are exceptions such as Yahoo! Movies , which labels each of

165-426: A rigid plate which grows out of the skin of various animals Fish scale Reptile scale Snake scale Scale (dermatology) , a secondary skin lesion in humans that resembles animal scales Scale (insect anatomy) , a feature of the wings of moths and butterflies Scale, a type of trichome , any flat epidermal outgrowth in botany Bulb scale, the storage layers of a plant bulb Scale insect ,

198-426: A rigid plate which grows out of the skin of various animals Fish scale Reptile scale Snake scale Scale (dermatology) , a secondary skin lesion in humans that resembles animal scales Scale (insect anatomy) , a feature of the wings of moths and butterflies Scale, a type of trichome , any flat epidermal outgrowth in botany Bulb scale, the storage layers of a plant bulb Scale insect ,

231-416: A waxy coated animal that resembles a fish scale Chemistry and materials science [ edit ] Fouling , sometimes called scale , a buildup of unwanted substances on a submerged surface Limescale , a hard, chalky deposit that often builds up inside kettles, hot water boilers, and pipework Mill scale , the flaky surface on hot rolled steel, consisting of iron oxides Scale (chemistry) ,

264-416: A waxy coated animal that resembles a fish scale Chemistry and materials science [ edit ] Fouling , sometimes called scale , a buildup of unwanted substances on a submerged surface Limescale , a hard, chalky deposit that often builds up inside kettles, hot water boilers, and pipework Mill scale , the flaky surface on hot rolled steel, consisting of iron oxides Scale (chemistry) ,

297-417: Is different from Wikidata All article disambiguation pages All disambiguation pages scale [REDACTED] Look up scale  or scales in Wiktionary, the free dictionary. Scale or scales may refer to: Mathematics [ edit ] Scale (descriptive set theory) , an object defined on a set of points Scale (ratio) ,

330-438: Is different from Wikidata All article disambiguation pages All disambiguation pages Rating scale A rating scale is a method that requires the rater to assign a value, sometimes numeric, to the rated object, as a measure of some rated attribute. All rating scales can be classified into one of these types: Some data are measured at the ordinal level . Numbers indicate the relative position of items, but not

363-420: Is not uncommon to calculate averages or means for such data, doing so cannot be justified because in calculating averages, equal intervals are required to represent the same difference between levels of perceived quality. The key issues with aggregate data based on the kinds of rating scales commonly used online are as follow: More developed methodologies include Choice Modelling or Maximum Difference methods,

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396-415: Is required to obtain an index of internal reliability such as Cronbach's alpha , which is a basic criterion for assessing the effectiveness of a rating scale. Rating scales are used widely online in an attempt to provide indications of consumer opinions of products. Examples of sites which employ ratings scales are IMDb , Epinions.com , Yahoo! Movies , Amazon.com , BoardGameGeek and TV.com which use

429-401: Is therefore impossible to evaluate the validity of the ratings as measures of viewer perceptions. Establishing validity would require establishing both reliability and accuracy (i.e. that the ratings represent what they are supposed to represent). The degree of validity of an instrument is determined through the application of logic/or statistical procedures. "A measurement procedure is valid to

462-479: The ratio level . Numbers indicate magnitude of difference and there is a fixed zero point. Ratios can be calculated. Examples include age, income, price, costs, sales revenue, sales volume and market share. More than one rating scale question is required to measure an attitude or perception due to the requirement for statistical comparisons between the categories in the polytomous Rasch model for ordered categories. In classical test theory , more than one question

495-638: The United States Scales, Lancashire , part of the village of Newton-with-Scales Scales, near Kirkoswald , Cumbria, a hamlet Scales, South Lakeland , Cumbria, England, a village The Scales , the initial climb of the Chilkoot Pass Other uses [ edit ] Scales (surname) Scales (film) , a 2019 Saudi Arabian film Baron Scales , a title in the Peerage of England Libra (constellation) , also known as "the scales", or

528-464: The United States Scales, Lancashire , part of the village of Newton-with-Scales Scales, near Kirkoswald , Cumbria, a hamlet Scales, South Lakeland , Cumbria, England, a village The Scales , the initial climb of the Chilkoot Pass Other uses [ edit ] Scales (surname) Scales (film) , a 2019 Saudi Arabian film Baron Scales , a title in the Peerage of England Libra (constellation) , also known as "the scales", or

561-475: The categories between F and A+ and BoardGameGeek, which provides explicit descriptions of each category from 1 to 10. Often, only the top and bottom category is described, such as on IMDb' s online rating facility. Validity refers to how well a tool measures what it intends to measure. With each user rating a product only once, for example in a category from 1 to 10, there is no means for evaluating internal reliability using an index such as Cronbach's alpha . It

594-420: The degree of validity and has special value under certain conditions. Types of validity include content validity, predictive validity, and construct validity. Sampling errors can lead to results which have a specific bias, or are only relevant to a specific subgroup. Consider this example: suppose that a film only appeals to a specialist audience—90% of them are devotees of this genre, and only 10% are people with

627-403: The degree that if measures what it proposes to measure." Another fundamental issue is that online ratings usually involve convenience sampling much like television polls, i.e. they represent only the opinions of those inclined to submit ratings. Validity is concerned with different aspects of the measurement process. Each of these types uses logic, statistical verification or both to determine

660-633: The latter being related to the Rasch model due to the connection between Thurstone's law of comparative judgement and the Rasch model. An international collaborative research effort has introduced a data-driven algorithm for a rating scale reduction. It is based on the area under the receiver operating characteristic . The historical origins of rating scales were reevaluated following a significant archaeological discovery in Tbilisi, Georgia , in 2010. Excavators unearthed

693-429: The magnitude of difference. Attitude and opinion scales are usually ordinal; one example is a Likert response scale : Some data are measured at the interval level . Numbers indicate the magnitude of difference between items, but there is no absolute zero point. A good example is a Fahrenheit/Celsius temperature scale where the differences between numbers matter, but placement of zero does not. Some data are measured at

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726-639: The namesake astrological sign Mizan ( Scale in English), a treatise on Islam by Javed Ahmed Ghamidi Pay scale , a system or structure of compensation for work Scale armour , an early form of armor Southern California Linux Expo , an open-source software conference held in Los Angeles, California See also [ edit ] Scala (disambiguation) Scalability , a concept in business, computer science, and electronics Scali (disambiguation) Scaling (disambiguation) Topics referred to by

759-535: The namesake astrological sign Mizan ( Scale in English), a treatise on Islam by Javed Ahmed Ghamidi Pay scale , a system or structure of compensation for work Scale armour , an early form of armor Southern California Linux Expo , an open-source software conference held in Los Angeles, California See also [ edit ] Scala (disambiguation) Scalability , a concept in business, computer science, and electronics Scali (disambiguation) Scaling (disambiguation) Topics referred to by

792-412: The range of mass or volume of a chemical reaction or process Social sciences [ edit ] Rating scale , a type of informational measurement scale Scale (analytical tool) , a concept in the study of complex systems and hierarchy theory Scale (social sciences) , a tool for ordering entities by quantitative attributes Places [ edit ] Scales, California , a community in

825-412: The range of mass or volume of a chemical reaction or process Social sciences [ edit ] Rating scale , a type of informational measurement scale Scale (analytical tool) , a concept in the study of complex systems and hierarchy theory Scale (social sciences) , a tool for ordering entities by quantitative attributes Places [ edit ] Scales, California , a community in

858-527: The ratio of a linear dimension of a model to the corresponding dimension of the original Scale factor , a number which scales, or multiplies, some quantity Long and short scales , how powers of ten are named and grouped in large numbers Scale parameter , a description of the spread or dispersion of a probability distribution Feature scaling , a method used to normalize the range of independent variables or features of data Scale (analytical tool) Measurements [ edit ] Scale (map) ,

891-426: The ratio of the distance on a map to the corresponding actual distance Scale (geography) Weighing scale , an instrument used to measure mass Scale (ratio) , the ratio of the linear dimension of the model to the same dimension of the original Spatial scale , a classification of sizes Scale ruler , a tool for measuring lengths and transferring measurements at a fixed ratio of length Vernier scale ,

924-426: The ratio of the distance on a map to the corresponding actual distance Scale (geography) Weighing scale , an instrument used to measure mass Scale (ratio) , the ratio of the linear dimension of the model to the same dimension of the original Spatial scale , a classification of sizes Scale ruler , a tool for measuring lengths and transferring measurements at a fixed ratio of length Vernier scale ,

957-446: The same term [REDACTED] This disambiguation page lists articles associated with the title Scale . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Scale&oldid=1215922839 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description

990-446: The same term [REDACTED] This disambiguation page lists articles associated with the title Scale . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=Scale&oldid=1215922839 " Categories : Disambiguation pages Place name disambiguation pages Hidden categories: Short description

1023-509: The scale on calipers Music [ edit ] Scale (music) , a sequence of ordered musical notes Scale (string instruments) , the sounding length of the strings of an instrument Scale (album) , a 2006 album by electronic artist Matthew Herbert "The Scale", a song from Our Love to Admire by Interpol Cinema [ edit ] Scale (film) , an animated short film directed by Joseph Pierce Science [ edit ] Biology [ edit ] Scale (zoology) ,

Scale - Misplaced Pages Continue

1056-509: The scale on calipers Music [ edit ] Scale (music) , a sequence of ordered musical notes Scale (string instruments) , the sounding length of the strings of an instrument Scale (album) , a 2006 album by electronic artist Matthew Herbert "The Scale", a song from Our Love to Admire by Interpol Cinema [ edit ] Scale (film) , an animated short film directed by Joseph Pierce Science [ edit ] Biology [ edit ] Scale (zoology) ,

1089-550: The usefulness of a rating scale. For example, if only the points 1-10 are given without description, some people may select 10 rarely, whereas others may select the category often. If, instead, "10" is described as "near flawless", the category is more likely to mean the same thing to different people. This applies to all categories, not just the extreme points. The above issues are compounded, when aggregated statistics such as averages are used for lists and rankings of products. User ratings are at best ordinal categorizations. While it

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