20.0 Points

Question 1 of 20

1.0 Points

If a variable has possible values –2, 6, and 17, then this variable is

A. both a continuous and a discrete variable

B. a continuous variable

C. neither a continuous nor a discrete variable D. a discrete variable Answer Key: D

1.0 Points

Question 2 of 20

Which of the following correctly describes the relationship between a sample and a population?

A. A population and a sample are not related. B. A sample is a group of subjects selected from a population to be studied. C. A sample is a group of populations that are subject to observation. D. A population is a group of samples that may or may not be included in a study

Answer Key: B

Question 3 of 20

1.0 Points

What is the term for a characteristic or attribute that can assume different values?

A.

expo nent B. datu m

C.

sam ple D. varia ble

Answer Key: D

Question 4 of 20

1.0 Points

If you classified the fruit in a basket as apple, orange, or banana, this would be an example of which level of measurement?

A.

ordi nal B. ratio C. nom inal

D.

inter val Answer Key: C

Question 5 of 20

1.0 Points

The amount of time needed to run the Boston marathon is an example of which type of variable?

A. contin uous

B.

discret e C. qualita tive

D.

none of the above Answer Key: A

1.0 Points

Question 6 of 20

An advertisement for a car states that it is 10% more powerful than its competitor. This is an example of

A.

ambigu ous average s B. suspect sample s C. changin g the subject D. detache d statistic s

Answer Key: D

Question 7 of 20

1.0 Points

What type of sampling is being employed if the population is divided into economic classes and a sample is chosen from each economic class to be surveyed?

A. cluster samplin g B. random samplin g C. systema tic samplin g

D.

stratifie d samplin g Answer Key: D