you are taking the following test:

Grade: 8,    Subject: Math,    Topic: Probability and Statistics Line Chart, Line Plot
 See the following text/image to answer questions 1 through 5 Following chart represents defects found in the production of cars in a car company.
 Question 1: Which defect is almost constant over the years? Paint Wiring Break None of them
 Question 2: Which defect was occurring the least in the year 2001? Break Wiring Paint Transmission
 Question 3: Which defect continued to worsen over the years? Paint Wiring Break None of them
 Question 4: The company applied techniques to improve paint defects. When did they see improvements in the paint defects? 2004 2005 2006 2008
 Question 5: How much improvement did the company see after they improved paint defects? Defects reduced to 25% Defects reduced to 200% Defects reduced to 75% Defects reduced to 50%
 Question 6: What is the average number of students selected from each grade? 4 4.2 4.5 5
 Question 7: Each point in the following line plot represents 1,000 people. How many people are more then 80 years old? 3,000 4,000 2,000 1,000
 Question 8: How many people are older then 60 and younger then 80? (Each point = 1,000 people.) 8,000 3,000 5,000 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? 450 600 580 725
 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? 3 4 15 6