Multiple choice

Use the data in the table below to answer the next three questions. 

The table below shows closing share prices for a small sample of companies.

COMPANYCLOSING SHARE PRICE – 08/07

3M Dental Products86.95

Tyco Electronics Power Systems47.45

Kyocera America Inc.94.10

Pfizer Inc.22.39

Xerox Company17.56

Northrop Grumman Corporation75.81

Lockheed Martin Maritime Systems100.17

Sony DADC51.91

Matsushita Electronic Components17.91

Foster Wheeler Environmental Corp.55.67

1.  The mean closing share price is 

 A. $29.82
 

B. $31.43
 

C. $56.99
 

D. $62.19
 

E. None of the above

2.  The standard deviation in closing share prices is

 A. $31.43
 

B. $29.82
 

C. $56.99
 

D. $62.19
 

E. None of the above

3.  The z score for the share price for Matsushita Electronic Components is 

 A.1.24
 

B.2.34
 

C.-2.34
 

D.-3.00
 

E.-1.24

4.  Which of the following is (are) based on cross sectional data?
 

A.  Company quarterly profits.
 

B.  Percentage of American adults who work full time.
 

C.  Historical closing stock prices.
 

D.  All of the above.
 

E.  None of the above.