- Scale analysis (statistics)
In

statistics ,**scale analysis**is a set of methods to analyse survey data, in which responses to questions are combined to measure alatent variable . These items can be dichotomous (e.g. yes/no, agree/disagree, correct/incorrect) or polytomous (e.g. disagree strongly/disagree/neutral/agree/agree strongly). Any measurement for such data is required to be reliable, valid, and homogeneous with comparable results over different studies.**Measurement models**Measurement is the assignment of numbers to subjects in such a way that the relations between the objects are represented by the relations between the numbers (Michell, 1990).

**Traditional models***

Likert scale

* Reliability analysis, see alsoClassical test theory andCronbach's alpha

*Factor analysis **Modern models based on**Item response theory *

Guttman scale

*Mokken scale

*Rasch model

* (Circular) Unfolding analysis

* Circumplex model**Other models***

Latent class analysis

*Multidimensional scaling **References*** Michell, J (1990). An Introduction to the logic of Psychological Measurement. Hillsdales, NJ: Lawrences Erlbaum Associates Publ.

*Wikimedia Foundation.
2010.*

### Look at other dictionaries:

**Scale analysis**— may refer to:* Scale analysis (mathematics) * Scale analysis (statistics) … Wikipedia**Statistics**— is a mathematical science pertaining to the collection, analysis, interpretation or explanation, and presentation of data. Also with prediction and forecasting based on data. It is applicable to a wide variety of academic disciplines, from the… … Wikipedia**statistics**— /steuh tis tiks/, n. 1. (used with a sing. v.) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and… … Universalium**Scale invariance**— In physics and mathematics, scale invariance is a feature of objects or laws that do not change if length scales (or energy scales) are multiplied by a common factor. The technical term for this transformation is a dilatation (also known as… … Wikipedia**Scale space**— theory is a framework for multi scale signal representation developed by the computer vision, image processing and signal processing communities with complementary motivations from physics and biological vision. It is a formal theory for handling … Wikipedia**Analysis of variance**— In statistics, analysis of variance (ANOVA) is a collection of statistical models, and their associated procedures, in which the observed variance in a particular variable is partitioned into components attributable to different sources of… … Wikipedia**Scale-invariant feature transform**— Feature detection Output of a typical corner detection algorithm … Wikipedia**STATISTICS**— Official Statistics Prior to the 19th century, statistical data on Jews were obtained irregularly, either from mere estimates, or as a by product from administrative records specifically relating to Jews. As modern official statistics developed… … Encyclopedia of Judaism**List of statistics topics**— Please add any Wikipedia articles related to statistics that are not already on this list.The Related changes link in the margin of this page (below search) leads to a list of the most recent changes to the articles listed below. To see the most… … Wikipedia**Guttman scale**— In statistical surveys conducted by means of structured interviews or questionnaires, a subset of the survey items having binary (e.g., YES or NO) answers forms a Guttman scale (named after Louis Guttman) if they can be ranked in some order so… … Wikipedia