A linear correlation coefficient that is greater than zero indicates a positive relationship. ... For example, when two stocks move in the same direction, the correlation coefficient is positive.

It's looking very likely that Friday will bring a fresh record high for U.S. stocks. And yet there are still signs of nervousness. Nicholas Colas, co-founder of DataTrek Research, a research boutique, ...

Del Tatto et al. developed a framework for determining causal links in molecular simulations. The framework uses two ...

You may have already heard this surprising statistic that might seem puzzling to the uninitiated: every summer, ice cream ...

Data can be overwhelming, but Excel's CORREL function helps you cut through the noise. Calculating the correlation ...

Effects of Language Barriers and Social Integration on Academic Achievement of International Students. Open Access Library Journal, 12, 1-15. doi: 10.4236/oalib.1113542 . Language barriers are a ...

Correlation coefficient measures the strength and direction of a linear relationship between two variables. It ranges from -1 to 1, where 1 indicates a perfect positive relationship and -1 ...

Use a quadratic regression instead of linear correlation, which can capture this parabolic relationship. ... For example, we might see a correlation between the number of social shares and rankings.

For example, if one variable has a cyclical effect on another, the covariance might be near zero, implying no relationship, even though the variables are closely related in a non-linear fashion.