Cluster analysis (in marketing) — Cluster analysis is a class of statistical techniques that can be applied to data that exhibit “natural” groupings. Cluster analysis sorts through the raw data and groups them into clusters. A cluster is a group of relatively homogeneous cases or … Wikipedia
Correlation does not imply causation — (related to ignoring a common cause and questionable cause) is a phrase used in science and statistics to emphasize that correlation between two variables does not automatically imply that one causes the other (though correlation is necessary for … Wikipedia
Cluster (spacecraft) — Cluster Operator European Space Agency in international collaboration with NASA Major contractors Dornier GmbH (now part of EADS) Mission type Orbiter Satellite of Earth … Wikipedia
Cluster sampling — is a sampling technique used when natural groupings are evident in a statistical population. It is often used in marketing research. In this technique, the total population is divided into these groups (or clusters) and a sample of the groups is… … Wikipedia
Correlation electronique — Corrélation électronique L expression de corrélation électronique est utilisée pour décrire l interaction entre électrons dans un système quantique, dont on considère la structure électronique. Le terme de corrélation provient des mathématiques… … Wikipédia en Français
Corrélation Électronique — L expression de corrélation électronique est utilisée pour décrire l interaction entre électrons dans un système quantique, dont on considère la structure électronique. Le terme de corrélation provient des mathématiques statistiques et indique… … Wikipédia en Français
Cluster analysis — The result of a cluster analysis shown as the coloring of the squares into three clusters. Cluster analysis or clustering is the task of assigning a set of objects into groups (called clusters) so that the objects in the same cluster are more… … Wikipedia
Cluster couplé — Méthode du cluster couplé Méthodes numériques pour le calcul de la structure électronique Hartree Fock Théorie de la perturbation de Møller Plesset Interaction de configuration Méthode du cluster couplé Champ multi configurationnel auto cohérent… … Wikipédia en Français
Correlation clustering — In machine learning, correlation clustering or cluster editing operates in a scenario where the relationship between the objects are known instead of the actual representation of the objects. For example, given a signed graph G = (V,E) where the… … Wikipedia
Cluster Analysis — An investment approach that places securities into groups based on the correlation found among their returns. Securities with high positive correlations are grouped together and segregated from those with negative correlation. Between each… … Investment dictionary
Correlation and dependence — This article is about correlation and dependence in statistical data. For other uses, see correlation (disambiguation). In statistics, dependence refers to any statistical relationship between two random variables or two sets of data. Correlation … Wikipedia