perfect correlation

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• perfect correlation — noun : correlation for which the Pearsonian coefficient or its equivalent for multiple correlation is 1 …   Useful english dictionary

• correlation coefficient — a statistical measure that when squared gives the degree of association between the values of two random variables. Most correlation coefficients are normalized so that they have values between +1 (perfect correlation) and −1 (perfect… …   Medical dictionary

• 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

• 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

• 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

• correlation coefficient — noun a statistic representing how closely two variables co vary; it can vary from 1 (perfect negative correlation) through 0 (no correlation) to +1 (perfect positive correlation) what is the correlation between those two variables? • Syn:… …   Useful english dictionary

• Correlation — In the world of finance, a statistical measure of how two securities move in relation to each other. Correlations are used in advanced portfolio management. Correlation is computed into what is known as the correlation coefficient, which ranges… …   Investment dictionary

• Correlation — In probability theory and statistics, correlation, (often measured as a correlation coefficient), indicates the strength and direction of a linear relationship between two random variables. In general statistical usage, correlation or co relation …   Wikipedia

• Correlation Coefficient — A measure that determines the degree to which two variable s movements are associated. The correlation coefficient is calculated as: The correlation coefficient will vary from 1 to +1. A 1 indicates perfect negative correlation, and +1 indicates… …   Investment dictionary

• correlation coefficient — /kɒrəˌleɪʃən koʊəˈfɪʃənt/ (say koruh.layshuhn kohuh fishuhnt) noun the statistical measure of correlation, called r, having the value +1 for perfect positive linear correlation, 1 for perfect negative linear correlation, and a value of 0 for a… …  

• correlation — 1. The mutual or reciprocal relation of two or more items or parts. 2. The act of bringing into such a relation. 3. The degree to which variables change together. product moment c. a statistical procedure which yields the c. coefficient referred… …   Medical dictionary