Multiple choice

1.  Which of the following is (are) time series data?

 A.  Weekly receipts at a clothing boutique.
 

B.  Monthly demand for an automotive part.
 

C.  Quarterly sales of automobiles.
 

D.  All of the above.
 

E.  None of the above

2.  Temperature measured in degrees Centigrade or Fahrenheit is an example of a variable that uses

 A. the ratio scale
 

B. the interval scale
 

C. the ordinal scale
 

D. the nominal scale


E. all of the above

3. Statistical studies in which researchers do not control variables of interest are

 A.  Experimental studies.

 B.  Uncontrolled experimental studies.

 C.  Arbitrary studies.

 D.  Observational studies.

 E.  None of the above.

4.  Statistical studies in which researchers control variables of interest are

 A.  Experimental studies.

 B.  Control observational studies.

 C.  Non-experimental studies.

 D. Observational studies.

 E.  None of the above.