The Trap 90% of Data Analysis Falls Into: The Big Lie That Zero Correlation Means No Relationship

Have you ever looked at data, seen a correlation coefficient of zero, and felt relieved that 'these two things are unrelated' ...

Is a 'Correlation Coefficient of 0.8' a Success? The Major Misconception in Data Analysis That Is Cutting Into Your Sales

Is your company's marketing strategy being deceived by the 'appearance' of data?A major e-commerce company discovered a ...
Forbes

Big Data News Roundup: Correlation vs. Causation

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 ...
Kellogg School of Management

Covariance and Correlation

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 ...