coefficient of correlation


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Related to coefficient of correlation: Coefficient of determination

coefficient of correlation

n. pl. coefficients of correlation
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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Noun1.coefficient of correlation - 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
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The Spearman coefficient of correlation was used for the correlation analyses of the scales.
Pearson coefficient of correlation between prey and predator population were determined in southern part of Punjab province.
This method also enables the parameter probability density function to be estimated as well as the dispersion to be evaluated, within which the LPU estimates the uncertainty values (uncertainty of parameter uncertainty) and correlation values (uncertainty of coefficient of correlation between the parameters).
However, only one coefficient of correlation showed a p value of less than 0.05, for the measures of sideward leap and bass stepping stone, both of which were in fact measures of dynamic balance, thus showing no significant correlation between measures of static and dynamic balance.12
The corresponding coefficient of correlation ([R.sup.2]) between [W.sub.P] and [W.sub.W] was 0.75.
Values near zero indicate optimal adjustment, while positive and negative values indicate underestimation and overestimation of predicted values, respectively (BONFANTE et al., 2010); Coefficient of correlation (r)--varies between -1 and +1, with values close to zero indicating the absence of correlation (ADDISCOTT & WHITMORE, 1987); Willmott's index of agreement (d)--indicates model accuracy and degree of discrepancy between actual and predicted values, with values between zero and +1, where d=+1 indicates perfect agreement, and d=0 indicates total disagreement (WILLMOTT et al., 2012); Coefficient "c"--indicates the model confidence and is expressed by c=d*r, varying between <0.40 ("low") and >0.85 ("optimum") (CAMARGO & SENTELHAS, 1997).
The strength of association between 2 variables was calculated using the Pearson's (r) (Normal distribution) or Spearman's (rs) (non-uniform distribution) coefficient of correlation. The coefficient of determination expresses the percentage of the PAPm's variation, explained by each variable separately and express their strength of prediction (prediction's potential).We calculate the coefficients of determination R2 for the linear regression and non-linear regression models.
r = coefficient of correlation; [summation]xy = sum of the product of x and y variables; [summation]x = sum of the x variable; [summation]y = sum of y variable; [summation][x.sup.2] = sum of the squared value of x; [summation][y.sup.2] = sum of the squared value of y; [([summation]x).sup.2] = square of sum of x variable; n = number of records/ observations.
The most influence to the employee performance at the coefficient of correlation (beta) of 0.659.
The amount of PO4 - extracted by this method has no - significant correlation with the soil characteristics except pH and Fe which has significant coefficient of correlation of 0.61* and -0.59* respectively.
Results: Pearson product-moment coefficient of correlation was computed to find out the relationship among variables.
In order to find out whether there is a significant association or not between two variables, coefficient of correlation was calculated.

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