Last weekend, I attended the 2013 Customer Summit in Las Vegas hosted by Mu Sigma, a decision sciences and “pure-play” analytics company started by one of our Chicago Booth graduates, Dhiraj Rajaram.

In 2004, a consultant at Booz Allen Hamilton in the US had an idea. He wanted to start a firm that would help businesses separate the signals from all the noise, in terms of information. He had a ...

<P> It's never too early to start mapping out a future &mdash; beyond childhood dreams of being a ballerina or ball player &mdash; and the members of the Sigma Gamma Rho Sorority recently offered ...

In part I we compare vector ($\bar{a}$) and arithmetic ($\bar{x}$) means of circular-type variates by showing how each changes with addition of one measurement (an) to (n - 1) measurements.