And how many of them are needed to build a house of cards? Just one — if you're willing to decorate it with decimals and call it science. A global analysis claims plastics are responsible for 13.497% ...

The digits in a number that have actual value. For example, in the number 00005208, the 5-2-0-8 are the significant digits. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction requires ...

The answer to this week’s contest crossword is an 11-letter word. Email your answer in the subject line to crosswordcontest@wsj.com.

The moment you’ve produced a single numeric “estimate,” you’ve created a guess dressed in statistical clothing. As you add more estimates, your guess may become more or less respectable, but it ...