Understand the essentials of positive correlation, where variables move together, impacting decision-making in finance, ...

Learn about correlation, including how it measures the relationship between securities, along with how it aids in diversifying your portfolio and risk management.

Although data correlation is a keystone of quantitative analysis, its application to many data series can be problematic. The ubiquitous Pearson correlation coefficient is defined for two data series ...

In the first quarter of 2013, the stock of big data has experienced sudden declines followed by sporadic bouts of enthusiasm. The volatility—a new big data “V”—continues this month and Ted Cuzzillo ...

In any given ecosystem, such as microbial ecology in the gut, members maintain complex interactions among themselves for the growth and stability of the ecological community. Some bacteria display ...

In the first case, there is a strong upward-sloping relationship between X and Y; in the second case, no apparent relationship; in the third case, a strong downward-sloping relationship. Note the ...

What Is the Correlation Coefficient? The correlation coefficient is a metric that measures the strength and direction of a relationship between two securities or variables, such as a stock and a ...

Forbes contributors publish independent expert analyses and insights. I write about the broad intersection of data and society. As machine learning has expanded beyond its roots in the worlds of ...