1. RANDOM SAMPLES

5. Another way to pick the 50 cars could be the use of a Random Number table.

6. RANDOM SAMPLES 11164 36318 75061 37674 26320 75100 10431 20418 19228 91792 21215 91791 76831 58678 87054 31687 93205 43685 19732 08468 10438 44482 66558 37649 08882 90870 12462 41810 01806 02977 36792 26236 33266 66583 60881 97395 20461 36742 02852 50564 73944 04773 12032 51414 82384 38370 00249 80709 72605 67497 Another way to pick the 50 cars could be the use of a Random Number table. I got the list of numbers below from a pre – generated random number table I found on the internet.

7. RANDOM SAMPLES 11164 36318 75061 37674 26320 75100 10431 20418 19228 91792 21215 91791 76831 58678 87054 31687 93205 43685 19732 08468 10438 44482 66558 37649 08882 90870 12462 41810 01806 02977 36792 26236 33266 66583 60881 97395 20461 36742 02852 50564 73944 04773 12032 51414 82384 38370 00249 80709 72605 67497 Another way to pick the 50 cars could be the use of a Random Number table. I got the list of numbers below from a pre – generated random number table I found on the internet. Let’s just use the first six numbers in the list…

8. RANDOM SAMPLES 11164 36318 75061 37674 26320 75100 10431 20418 19228 91792 21215 91791 76831 58678 87054 31687 93205 43685 19732 08468 10438 44482 66558 37649 08882 90870 12462 41810 01806 02977 36792 26236 33266 66583 60881 97395 20461 36742 02852 50564 73944 04773 12032 51414 82384 38370 00249 80709 72605 67497 Another way to pick the 50 cars could be the use of a Random Number table. I got the list of numbers below from a pre – generated random number table I found on the internet. Let’s just use the first six numbers in the list… You can decide the parameters for splitting up the numbers. I am going to go with groups of three… 111 643 631 875 061 376 742 632 075 100

9. RANDOM SAMPLES 11164 36318 75061 37674 26320 75100 10431 20418 19228 91792 21215 91791 76831 58678 87054 31687 93205 43685 19732 08468 10438 44482 66558 37649 08882 90870 12462 41810 01806 02977 36792 26236 33266 66583 60881 97395 20461 36742 02852 50564 73944 04773 12032 51414 82384 38370 00249 80709 72605 67497 Another way to pick the 50 cars could be the use of a Random Number table. I got the list of numbers below from a pre – generated random number table I found on the internet. Let’s just use the first six numbers in the list… You can decide the parameters for splitting up the numbers. I am going to go with groups of three… 111 643 631 875 061 376 742 632 075 100 To find 50 cars out of 500, I use the numbers between 001 and 500… 111 will be the first car075 will be the fourth cab 061 will be the second car100 will be the fifth car 376 will be the third carAnd so on until we get 50 cars…

10. RANDOM SAMPLES How to draw a random sample: 1. Number all members of the population sequentially

11. RANDOM SAMPLES How to draw a random sample: 1. Number all members of the population sequentially 2. Use a table, calculator, or computer to select random numbers from the numbers assigned to the population members.

12. RANDOM SAMPLES How to draw a random sample: 1. Number all members of the population sequentially 2. Use a table, calculator, or computer to select random numbers from the numbers assigned to the population members. 3. Create the sample by using population members with numbers corresponding to those randomly selected.

13. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%.

14. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%. Instead of having to actually flip the quarter, I am going to use a random number table to simulate the coin flips.

15. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%. Instead of having to actually flip the quarter, I am going to use a random number table to simulate the coin flips. Here is a line from a random number table : 51486 72875 38605 29341

16. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%. Instead of having to actually flip the quarter, I am going to use a random number table to simulate the coin flips. Here is a line from a random number table : 51486 72875 38605 29341 If we let even = heads and odd = tails, we have simulated 20 coin flips.

17. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%. Instead of having to actually flip the quarter, I am going to use a random number table to simulate the coin flips. Here is a line from a random number table : 51486 72875 38605 29341 If we let even = heads and odd = tails, we have simulated 20 coin flips. Our results would be : TTHHH THHTT THHHT HTTHT

18. RANDOM SAMPLES Simulation – a numerical facsimile or representation of a real – world phenomenon. EXAMPLE : I want to test the hypothesis that the chance of getting heads when I flip a quarter 20 times is 50%. Instead of having to actually flip the quarter, I am going to use a random number table to simulate the coin flips. Here is a line from a random number table : 51486 72875 38605 29341 If we let even = heads and odd = tails, we have simulated 20 coin flips. Our results would be : TTHHH THHTT THHHT HTTHT ** if you count the H’s, there are 10 !