A. Classify if: Nominal, Ordinal, Interval or Ratio.

1.number of people in household

2.number of large appliances used daily

3.use of electric heating (yes or no)

4.force

5.average monthly electric bill

6.current time

7.It is a level of measurement where the data is arranged by ranks and the numerical measurement of interval between ranks is not constant.

8.The level of measurement with zero level arbitrary based on the standard of measurement used. The zero level of one measurement is not the same as the zero level of another measurement but the distance between the levels is constant.

B. In a study of the effect of computer games to academic performance, identify the following:

1. dependent variablea. time spent on playing computer games

2. independent variableb. grades is math quiz

3. controlled variablec. student's favorite color

d. teacher's ability

C. Inferential or Descriptive: study shows that 50% of the students who have 6-8 hours of sleep do well on their exams