Multiple choice

Consider the following to answer the next four questions.

Below is a histogram and the five number summary for salaries (in $) for a sample of U.S. marketing managers. 

 EMBED MtbGraph.Document.15  

  Min    Q1Median    Q3           Max

46360696937702091750129420

1.  The shape of this distribution is 

 A. Symmetric
 

B. Bimodal.
 

C. Right skewed.
 

D. Left skewed.
 

E. Normal.

2.  The most appropriate measure of central tendency for these data is the

 A.  Median.
 

B.  Mean.
 

C.  Mode.
 

D.  Range.
 

E.  Standard deviation.

3.  The IQR for these data is

 A. $83,060
 

B. $22,057
 

C. $69,693
 

D. $77.020
 

E. $14,566

4.  Suppose the marketing manager who was earning $129,420 got a raise and is now earning $140,000.  Which of the following statement is true?

 A.  The mean would increase.
 

B.  The median would increase.
 

C.  The range would increase.
 

D.  Both A and C.
 

E.  All of the above