# correlation coefficient

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## correlation coefficient

[‚kär·ə′lā·shən ‚kō·i′fish·ənt]
(statistics)
A measurement, which is unchanged by both addition and multiplication of the random variable by positive constants, of the tendency of two random variables X and Y to vary together; it is given by the ratio of the covariance of X and Y to the square root of the product of the variance of X and the variance of Y.

## correlation coefficient

a measure of the association between two variables. See CORRELATION, PEARSON PRODUCT MOMENT CORRELATION COEFFICIENT, SPEARMAN RANK CORRELATION COEFFICIENT.
References in periodicals archive ?
Pearson correlation coefficient is applied in order to test the significance between the age and degree of premenstrual syndrome and symptoms.
Image 5 displays the interpretation of the correlation coefficient.
2006b) also reported low negative genetic correlation coefficients of -0.
The Pearson's correlation coefficient between the two time-series is calculated as -0.
The correlation coefficient, path coefficients, and determination coefficients among these growth-related traits were calculated.
The correlation coefficients (q) and vertical parallax residual (E) of the measured points have been calculated following the measurement.
Calculate the correlation coefficient between your country and each of the two neighboring countries over the three series listed above (for a total of six calculations).
For example, a lengthy time separation between performing the Muller's maneuver and performing the NPSG could reduce the correlation coefficient.
Multiple correlation coefficients between different variables are often presented in a study.
3 demonstrates process of replicas coinciding necessary for following determination of correlation coefficient maximal achievable for this pair.
Thus, computation of Pearson's correlation coefficients (rho) makes sense.
The seasonal variations of TOA during 1999-2001 were examined and linear correlation coefficients were defined without using data of that period, when the TOA estimated in Lithuania was significantly different from the data of neighbouring countries.

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