In the rush to house victims of Hurricane Katrina in 2005, the Federal Emergency Management Agency (FEMA) ordered nearly ______ billion worth of trailers and mobile homes.

Pilot testing your survey can help to

a. identify problems b. practice protocols. c. clear up ambiguity d. all of the above

What is another way to describe a mean?

a) deviation b) variability c) average score d) test statistic