correlation coefficient


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correlation coefficient

n.
A measure of the interdependence of two random variables that ranges in value from -1 to +1, indicating perfect negative correlation at -1, absence of correlation at zero, and perfect positive correlation at +1. Also called coefficient of correlation.

correlation coefficient

n
(Statistics) statistics a statistic measuring the degree of correlation between two variables as by dividing their covariance by the square root of the product of their variances. The closer the correlation coefficient is to 1 or –1 the greater the correlation; if it is random, the coefficient is zero. See also Pearson's correlation coefficient, Spearman's rank-order coefficient

correla′tion coeffi`cient


n.
one of a number of measures of statistical correlation, usu. assuming values from + 1 to −1.
[1905–10]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.correlation coefficient - 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?"
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
parametric statistic - any statistic computed by procedures that assume the data were drawn from a particular distribution
Pearson product-moment correlation coefficient, product-moment correlation coefficient - the most commonly used method of computing a correlation coefficient between variables that are linearly related
multiple correlation coefficient - an estimate of the combined influence of two or more variables on the observed (dependent) variable
biserial correlation, biserial correlation coefficient - a correlation coefficient in which one variable is many-valued and the other is dichotomous
chance-half correlation, split-half correlation - a correlation coefficient calculated between scores on two halves of a test; taken as an indication of the reliability of the test
tetrachoric correlation, tetrachoric correlation coefficient - a correlation coefficient computed for two normally distributed variables that are both expressed as a dichotomy
Translations
korelační koeficient
References in periodicals archive ?
The estimates of genotypic correlation coefficient between eight characters showed close parallelism in direction with their corresponding phenotypic correlation coefficient.
Correlation coefficient, heritability, and correlative heritability were calculated as follows:
Using the hyperspectral data combined with the [EC.sub.1:5] of saline soil samples, we aimed to discuss the influence of fractional differential on correlation coefficient between [EC.sub.1:5] and reflectance spectra of saline soil and to provide a basis reference for building inversion model of soil salinity by using hyperspectral data.
For establishing concurrent validity, scores of HAM-D-U and BDI-U were compared by using Spearman correlation coefficient. The study was conducted at Mayo Hospital, Lahore, from May to December 2014.
Furthermore, to study the correlation coefficients obtained for both the base model as the model with pesticide, it was initially identify a reduction of 68.57% in the correlation coefficient between L* and b *.
To determine when geographic voting patterns change in consecutive elections, I use the state-by-state correlation coefficient, a measure that is based on whether individual states are above or below average in their partisan strength.
The cell counts obtained by the improved Neubauer chamber method and with the Sysmex XT-4000i were compared using the correlation coefficient. The correlation was considered significant when P <0.05.
A correlation coefficient analysis data tool pack within Microsoft Excel[R] was used to determine correlation coefficients between the variables listed in Table 2.
Hong and Hwang [4] established the correlation coefficient of intuitionistic fuzzy sets in probability space by using the generalization of fuzzy sets by Zadeh [5].
To determine the degree of linear dependence within an analysis of relationship between two variables x and y, correlation coefficient is often used.