Categorical data

In statistics, categorical data is that part of an observed dataset that consists of categorical variables, or for data that has been converted into that form, for example as grouped data. More specifically, categorical data may derive from either or both of observations made of qualitative data, where the observations are summarised as counts or cross tabulations, or of quantitative data, where observations might be directly observed counts of events happening or they might counts of values that occur within given intervals. Often, purely categorical data are summarised in the form of a contingency table. However, particularly when considering data analysis, it is common to use the term "categorical data" to apply to data sets that, while containing some categorical variables, may also contain non-categorical variables.

See also

• List of analyses of categorical data
• Qualitative data

References

• Andersen, Erling B. 1980. Discrete Statistical Models with Social Science Applications. North Holland, 1980.
• Bishop, Y. M. M.; Fienberg, S. E.; Holland, P. W. (1975). Discrete Multivariate Analysis: Theory and Practice. MIT Press. ISBN 978-0262021135. MR381130. 
• Christensen, Ronald (1997). Log-linear models and logistic regression. Springer Texts in Statistics (Second ed.). New York: Springer-Verlag. pp. xvi+483. ISBN 0-387-98247-7. MR1633357. 
• Lauritzen, Steffen L. (2002 electronic (1979, 1982, 1989)). Lectures on Contingency Tables (updated electronic version of the (University of Aalborg) 3rd (1989) ed.). http://www.stats.ox.ac.uk/~steffen/papers/cont.pdf. 
• NIST/SEMATEK (2008) Handbook of Statistical Methods

This statistics-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Categorical data Statistical terminology Statistics stubs Wikimedia Foundation. 2010. Игры ⚽ Поможем сделать НИР Nonnosus (historian) Nono, Córdoba Look at other dictionaries: Analysis of categorical data — These are statistical procedures which can be used for the analysis of categorical data:* regression * analysis of variance * linear modeling * log linear modeling * logistic regression * repeated measures analysis * simple correspondence… …   Wikipedia Data collection — is a term used to describe a process of preparing and collecting data, for example, as part of a process improvement or similar project. The purpose of data collection is to obtain information to keep on record, to make decisions about important… …   Wikipedia Data analysis — Analysis of data is a process of inspecting, cleaning, transforming, and modeling data with the goal of highlighting useful information, suggesting conclusions, and supporting decision making. Data analysis has multiple facets and approaches,… …   Wikipedia Categorical — See:* Categorical imperative * Morley s categoricity theorem * Categorical data analysis * Categorical distribution * Categorical logic * Categorical syllogism * Categorical proposition * Categorization * Categorical perception * Category theory… …   Wikipedia Data — For data in a computer science context, see Data (computing). For other senses of the word, see Data (disambiguation). See also datum, a disambiguation page. The term data refers to qualitative or quantitative attributes of a variable or set of… …   Wikipedia Data set — For IBM mainframe term for a file, see Data set (IBM mainframe). A data set (or dataset) is a collection of data, usually presented in tabular form. Each column represents a particular variable. Each row corresponds to a given member of the data… …   Wikipedia Categorical perception — is the perception of different sensory phenomena as being qualitatively,or categorically, different. It is opposed to continuous perception , the perception of different sensory phenomena as being located on a smooth continuum.Categorical… …   Wikipedia data — Synonyms and related words: ALGOL, COBOL, FORTRAN, Festschrift, a priori principle, account, acquaintance, affirmation, alphabetic data, alphanumeric code, ana, angular data, announcement, anthology, apriorism, aquarium, assembler, assertion,… …   Moby Thesaurus categorical variable — one of the variables that are not continuous but instead put data into categories …   Medical dictionary Count data — In statistics, count data is data in which the observations can take only the non negative integer values {0, 1, 2, 3, ...}, and where these integers arise from counting rather than ranking. The statistical treatment of count data is distinct… …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”