Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Support PBS Shop PBS Search PBS
NOVA scienceNOW Home Past Stories Watch Feedback RSS Dispatches Teachers Science News
NOVA scienceNOWNOVA scienceNOWNOVA scienceNOWComing up

Wisdom of the Crowds

Wisdom of the Crowds

Ask enough people to estimate something, and the average of their guesses will get you surprisingly close to the right answer.

arrow Counting Cabs

Think you can estimate better than the masses? Find out here.

arrow One-Minute Experiment

Try this simple test of the wisdom-of-the-crowds concept yourself.

arrow Ask the Expert

Statistician Ed George from the Wharton School answers your questions on averages, means, medians, and much more.

Video Extra

Find out how averaging guesses helped locate a lost sub.




Funding provided by