What is the purpose of random assignment in an experiment? Check all that apply.

◻ To select a sample that is representative of the population

◻ To create similar treatment groups

◻ To eliminate the effects of the explanatory variable

◻ To control voluntary response bias

◻ Control for confounding variables

Which word contain an affix? Check all that apply.

▢  aware 

▢  useful

▢  unable

▢  colorful

▢  pretty

Using Context Clues to Check your Prediction.

Which context clues show that maxium means "the largest amount possible"? Check all that apply.

A. The road trip would take a long time.

B. The word luckily shows that the mother was able to take a lot of time off for the long trip.

C. The family had a great time.