Use the following information for questions:
A researcher asked random samples of 50 kindergarten teachers and 50 12th grade teachers how much of their own money they spent on school supplies in the previous school year. They wanted to see if teachers at one grade level spend more than teachers at the other grade level.
-In this study, the grade level taught (kindergarten or 12th grade) is an example of
A) a randomly assigned treatment.
B) an explanatory variable.
C) a response variable.
D) a normal variable.

Question

Use the following information for questions:
 A researcher asked random samples of 50 kindergarten teachers and 50 12th grade teachers how much of their own money they spent on school supplies in the previous school year. They wanted to see if teachers at one grade level spend more than teachers at the other grade level.
-In this study, the grade level taught (kindergarten or 12th grade) is an example of
A) a randomly assigned treatment.
B) an explanatory variable.
C) a response variable.
D) a normal variable.

Quizplus · Accepted Answer

The grade level taught (kindergarten or 12th grade) is an explanatory variable because it is the factor that the researcher is using to explain differences in the amount of money spent on school supplies.

Use the Following Information for Questions