Identify the examples below as representing the nominal, ordinal, interval, or ratio scale of measurement.

1. The time you went to bed last night.  ________________

2. The number of questions that you missed on your statistics quiz. ____________

3. Marital status (single, married, divorced, widowed) ________________

4. Dave Letterman's Top Ten list. _____________

5. The distance a quarterback can throw a football. ____________

6. The amount of time it takes to solve a crossword puzzle. ______________

For the next few problems, indicate whether the variable being measured is discrete or continuous.

7. The number of children in a family. ____________________

8. The amount of time it takes to solve a math problem. ______________

9. Weight gain during a 6-month period. _____________

10. The number of errors on a test. _____________

Identify the dependent and independent variables for each of the following examples.

11. A study done on college students reports that test scores are slightly higher in the afternoon than they are in the morning.

independent variable: _______________  dependent variable: ________________________ 

12. An experiment is designed to determine the effects of a training program on productivity. Workers are randomly assigned to one of two conditions: training program or no training program. Productivity is measured in terms of the number of projects completed per month.

independent variable: _______________  dependent variable: ________________________

13. Dr. Smith wants to study the effects of music on stress levels. So, he assigns one group to listen to classical music, and the other to listen to punk rock, and then after, measures their stress levels on a standard scale.

independent variable: _______________  dependent variable: ________________________