If You Are Interested in How Well Students Perform on a Standardized

Multiple Choice

If you are interested in how well students perform on a standardized math achievement test after they have completed a six-week math unit in either a computer-assisted class,a videotaped course,or a regular classroom,and you also want to include a factor for sex (boys vs.girls) ,what is the dependent variable?

A) The type of math instruction
B) The subjects' sex
C) The six-week unit
D) The scores on the math achievement test