Error bars illustrate the margin of error for a survey estimate by showing how precise that estimate is. Here are some answers to common questions that might help you better understand charts with ...

Jones leads 49ers to road win in Purdy’s absence A Division of NBCUniversal. DISCLAIMER: This site and the products offered are for entertainment purposes only, and there is no gambling offered on ...

Advice columnist Carolyn Hax answers your questions about the strange train we call life.