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 ...

Correlation coefficients are indicators of the strength of the linear relationship between two different variables, x and y. A linear correlation coefficient that is greater than zero indicates a ...

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 ...

Before I started playing Guess the Correlation, I didn’t expect to spend an hour of my Easter weekend obsessing over an 8-bit video game, much less one based on something that many scientists do every ...