Fast Fact The standard deviation is by far the most popular measure. People usually mean standard deviation when they speak of volatility.

Film director Denis Villeneuve said it was “a huge honour” to be chosen as the director of the next James Bond movie.

A new attempt to stop the Government's proposed changes to the welfare system has the backing of more than 100 Labour MPs. An amendment signed by the MPs would allow them to vote on a resolution ...

They helped to make Vincent van Gogh among the most famous and influential painters in the history of art. Why did sunflowers obsess him and so many other artists before and since?

Find all the latest ProFootballTalk news, live coverage, videos, highlights, stats, predictions, and results right here on NBC Sports.

Snapchat has a green dot to tell you about your friend's activity , but it doesn't work like recent activity functions of other smartphone apps do.

When designing a workout, it's important to move in all of the body's planes. What are they? Here's an anatomy primer to help.

Options trading sounds complicated until you know these four basic moves. Learn how to trade options here.