A t-test is one of the most frequently used procedures in statistics.

Editor’s note: Distinguished statistician and essayist David Kerridge passed away last month in Aberdeen, Scotland, at the age of 81. The former head of statistics at Aberdeen University, Kerridge was a leader in the British Deming Association and lectured with W. Edwards Deming.

Momentum is a very powerful thing. In physics, momentum = mass × velocity. The cool thing about momentum is that the faster an object is moving, the harder it is to stop. This is also true for any project that you are working on.

Earlier this month an ex-CIA employee and whistleblower, Edward Snowden, exposed the federal government’s 6-year old, clandestine initiative, referred to internally as PRISM, a covert data-gathe

Recently, a reader wrote me to suggest that rather than trying to encourage someone, a better way to motivate them is to issue a challenge. So, I felt challenged to write about it.

The idea of the garage as an incubator for startup businesses is as American as hot dogs, baseball, and apple pie (although I like apple cobbler better).

Double a city’s population, and its economic productivity goes up 130 percent. MIT researchers think they know why.

Whether you are a shelf stocker at Walmart, a second-year associate at a consulting company, or an equity analyst at an investment bank, you may feel that you are not adequately compensated for the work you do; in other words, you are underpaid.