In this excerpt from the new book 'Speak Data,' the Wharton professor and best-selling author shares his thoughts on how we ...

Stocks: Real-time U.S. stock quotes reflect trades reported through Nasdaq only; comprehensive quotes and volume reflect trading in all markets and are delayed at least 15 minutes. International stock ...

A woman discovers her boyfriend tracks every detail of their relationship in a spreadsheet, including “I love you” counts.