1- Classify as nominal-level, ordinal-level, interval-level, or ratio-level data.

a. Horsepower of motorcycle engines-

b. Rankings of professors (adjunct, instructor, assistant, associate, full).

c. Oven temperature.

d. ZIP codes.

2-Classify each variable as qualitative or quantitative. If the variable is quantitative, classify it as discrete or continuous.

a. Colors of automobiles that run a red light

b. Number of desks in classrooms-quantitative

c. Water temperature of the saunas at a given health spa

d. ZIP codes- quantitative

3-Classify each sample as random, systematic, stratified, or cluster.

a. Every seventh customer entering a shopping mall is asked to identify his or her favorite store.

b. One hundred numbers are written onto sheets of paper, then placed into a bag which is mixed thoroughly; ten numbers are then selected, mixing the bag again after each number.

c. Students are separated into their class.

d. To determine people’s ideas of good nutrition, we surveyed the customers at Food Lion, Save-A-Lot, and Harris Teeter.