
Question 1 
Which defect is almost constant over the years? 
A.  Paint  B.  Wiring 
C.  Break  D.  None of them 
 
  

Question 2 
Which defect was occurring the least in the year 2001? 
A.  Break  B.  Wiring 
C.  Paint  D.  Transmission 
 
  

Question 3 
Which defect continued to worsen over the years? 
A.  Paint  B.  Wiring 
C.  Break  D.  None of them 
 
  


Question 4 
The company applied techniques to improve paint defects. When did they see improvements in the paint defects? 
A.  2004  B.  2005 
C.  2006  D.  2008 
 
  

Question 5 
How much improvement did the company see after they improved paint defects? 
A.  Defects reduced to 25%  B.  Defects reduced to 200% 
C.  Defects reduced to 75%  D.  Defects reduced to 50% 
 
  


Question 6 
What is the average number of students selected from each grade? 
A.  4  B.  4.2 
C.  4.5  D.  5 
 
  

Question 7 
Each point in the following line plot represents 1,000 people. How many people are more then 80 years old? 
A.  3,000  B.  4,000 
C.  2,000  D.  1,000 
 
  

Question 8 
How many people are older then 60 and younger then 80? (Each point = 1,000 people.) 
A.  8,000  B.  3,000 
C.  5,000  D.  4,000 
 
  


Question 9 
Calls received in a customer service department are plotted in the following plot. Each point represents 100 calls. What is the average number of calls during the week? 
A.  450  B.  600 
C.  580  D.  725 
 
  

Question 10 
Calls received in a customer service department are plotted in the following plot. Each point represents 100 calls. If one person can handle ~200 calls, how many full time employees should the company hire so that all calls can be handled effectively everyday? 
A.  3  B.  4 
C.  15  D.  6 
 
  
