Multiple Choice Answers

When TV advertisements report that “2 out of 3 dentists surveyed indicated they would recommend Brand X toothpaste to their patients,” an informed consumer may question the conclusion because:
A. the results were incorrectly computed.
B. dentists were not really surveyed.
C. the conclusion does not include the total number of dentists surveyed.
D. the conclusion is not illustrated with a graph.
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.

A poll of 1,000 voters used to predict the outcome of a statewide election is an example of:
A. descriptive statistics.
B. continuous variable measurement.
C. statistical inference.
D. deductive statistics.

The number of fishing boats shipped from a manufacturer to a dealer each month is described as a:
A. random variable.
B. qualitative variable.
C. discrete variable.
D. continuous variable.

The kinds of numbers that can take on any value, either a fraction or integer, between specified limits are called:
A. random variables.
B. qualitative variables.
C. discrete variables.
D. continuous variables.

Which of the following is an example of a qualitative variable?
A. Number of children in a family
B. Weight of a person
C. Color of ink in a pen
D. Miles between oil changes

Data obtained on the preferences of different religious groups for specific types of network television programming is an example of:
A. random variables.
B. qualitative variables.
C. discrete variables.
D. continuous variables.

__________ level data are mutually exclusive and exhaustive, and categories are scaled according to the amount of the characteristic they possess, and zero represents a point on the scale.
A. Nominal
B. Ordinal
C. Interval
D. Ratio