The main purpose of descriptive statistics is to:

• A.Summarize data in a useful and informative manner.

• B. Make inferences about a population.

• C. Determine if the data adequately represents the population.

• D. Gather or collect data.

Which of the following is an example of a continuous variable?

• A.Tons of concrete to complete a parking garage

• B. Number of students in a statistics class

• C. Zip codes of shoppers

• D. Rankings of baseball teams in a league

The incomes of 50 loan applicants are obtained. Which level of measurement is income?

• A.Nominal

• B. Ordinal

• C. Interval

• D. Ratio

When TV advertisements report "2 out of 3 dentists surveyed indicated they would

recommend Brand X toothpaste to their patients," an informed consumer may question

the conclusion because the:

• A.Sample was only 5 dentists

• B. Sample of dentists is clearly explained

• C. Advertisement does not include the total number of dentists surveyed

• D. Conclusion is not illustrated with a graph

A bank asks customers to evaluate the drive-thru service as good, average, or poor.

Which level of measurement is this classification?

• A.Nominal

• B. Ordinal

• C. Interval

• D. Ratio

A portion or part of a population is called a

• A. Random survey

• B. Sample

• C. Tally

• D. Frequency distribution

If Gallup, Harris, and other pollsters asked people to indicate their political party

affiliation as Democrat, Republican, or Independent, the data gathered would be an

example of which scale of measurement?

• A. Nominal

• B. Ordinal

• C. Interval

• D. Ratio

The members of each basketball team wear numbers on their jerseys. What scale of

measurement are these numbers considered?

• A. Nominal

• B. Ordinal

• C. Interval

• D. Ratio

A marketing class of 50 students evaluated the instructor using the following scale:

superior, good, average, poor, and inferior. The descriptive summary showed the

following survey results: 2% superior, 8% good, 45% average, 45% poor, and 0%

inferior.

• A. The instructor's performance was great

• B. The instructor's performance was inferior

• C. Most students rated the instructor as poor or average

• D. No conclusions can be made

A survey includes a question regarding marital status that has the following responses:

single, married, divorced, separated, or widowed. What is the scale of measurement for

this question?

• A. Ratio

• B. Interval

• C. Ordinal

• D. Nominal