More than one correlation coefficient can be computed between two variables when the data can be organized into subsets determined by one or more grouping factors. This paper discusses the ...

When I was initially assigned this same topic one year ago -- identifying which units had underperformed the most during the 2018 campaign-- I started by creating a new model to measure performance ...

What does it really mean when we say last week's meteor delivered a force 30 times the size of the Hiroshima bomb? And, wow, that sure seems big. And it's true: The Russian meteor was a monster -- the ...

Recently subdivided units have become a hot issue in Hong Kong. There is no universal definition to what constitutes a subdivided unit. Nevertheless, a general perception is that subdivided units ...

When someone tells you they'll be "back in two shakes!" they are guaranteed to take much, much longer than that — at least if we're talking shakes in the sense used by physicists. The shake is a unit ...

Scientists are preparing to redefine the fundamental unit of time. It won’t get any longer or shorter, but it will be more precise — and a whole lot more powerful. By Alanna Mitchell Modern ...

Though you’ve likely never given it much thought, a universally accepted unit of measurement like the humble meter is an amazing thing. It lets scientists separated by culture, language, race and even ...