In a grouped frequency distribution, the range of score values into which the raw scores
are grouped is called the _____ .
a. class interval
b. class range
c. score range
d. group interval
Question 2
The term equivalent groups means that ______ .
a. the independent variable affects all groups equally
b. the dependent variable is the same among all groups
c. only chance factors influence differences among groups after the independent variable has been manipulated
d. the groups of participants do not differ in any systematic way prior to the manipulation of the independent variable