Almost every day you can find in media commentary that XYZ is causing stocks to fall (or rise). Such definitive statements are common—but what’s almost always missing is statistical proof. And if you ...

In the medical field, data is repeatedly cited showing that doctors with higher patient satisfaction scores have patients ...

The warmer the season, the higher the crime rate'—this is a 'certain fact' found even in statistics textbooks. In fact, it is ...

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 ...

Correlation doesn't imply causation. You've probably heard that before. It's a true statement that's important in statistical analysis—if more tall people own cats, that doesn't mean that cats cause ...

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 today's digital economy, data has become one of the most valuable assets any organization can possess. Yet, for all its abundance, data on its own rarely leads to understanding. The challenge for ...

Cross-correlation is a measurement that tracks the movements over time of two variables relative to each other.