If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

Comparing center and spread


The Baltimore Ravens won the American football championship in 2013. In the same season, the Kansas City Chiefs had a record of 2 wins and 14 losses.
The dot plots below show the 40-yard dash times (in seconds) of the defensive backs on each team's roster. Defensive backs mainly defend against passes, and the 40-yard dash is the main measure of speed used in American football.
The center of the Ravens distribution is
the center of the Chiefs distribution.
The variability in the Ravens distribution is
the variability in the Chiefs distribution.