1. Opener 1.Determine the mean number of hours spent watching TV each weekend from the results of the randomly selected survey. 2.What is the minimum number of hours spent watching TV each weekend? 3.What is the maximum number of hours spent watching TV each weekend? 4.Determine the median of the data set. 5.How does the mean compare to the median? Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

2. Opener-Answers Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

3. Opener-Answers 2.What is the minimum number of hours spent watching TV each weekend? The minimum number of hours spent watching TV each weekend is 3 hours. Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

4. Opener-Answers 3.What is the maximum number of hours spent watching TV each weekend? The maximum number of hours spent watching TV each weekend is 15 hours. Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

5. Opener-Answers Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

6. Opener-Answers 5.How does the mean compare to the median? They are fairly close. The mean is approximately 7.4 and the median is 7. Survey Number Hours Spent Watching TV (per weekend) 15 23 310 46 515 69 78 83

7. Ch. 14.4 Day 1 of 2 Using Samples, Centers, and Spreads to Describe Data Page 732

8. Page 732 Read for me please… Work on #1 in your groups…3 minutes Read the box on the bottom of page 732 for me please… Page 733 Look at the table Maria made. 2. How did Maria determine the mean number of minutes the students spent studying? Maria determined the mean by adding up all the minutes the eight students spent studying each week. Then she divided this amount by eight to determine the mean.

9. Page 733 Sample #Student #Min. Spent Studying Mean Number of Min. Studying per week Absolute Deviation of Min. per week 1 1260 13120 1050 11150 16150 1450 04100 20200 60 – 110 = -50ǀ-50ǀ = 50 *Work on #3 in your groups, using the table on page 750. Complete the tables on page 734-736 (tables 2-5)…7 minutes (skip #4-6). 120 – 110 = 10 50 – 110 = -60 150 – 110 = 40 50 – 110 = -60 100 – 110 = -10 200 – 110 = 90 ǀ10ǀ = 10 ǀ-60ǀ = 60 ǀ40ǀ = 40 ǀ-60ǀ = 60 ǀ-10ǀ = 10 ǀ90ǀ = 90

10. Page 734 Sample #Student #Min. Spent Studying Mean Number of Min. Studying per week Absolute Deviation of Min. per week 2 17200 01120 1890 16150 0960 1990 11150 04100 200 – 120 = 80ǀ80ǀ = 80 *Work on #3 in your groups, using the table on page 750. Complete the tables on page 734-736 (tables 2-5)…7 minutes (skip #4-6).

11. Page 735 Sample #Student #Min. Spent Studying Mean Number of Min. Studying per week Absolute Deviation of Min. per week 3 1890 08300 1260 05150 0260 20200 13120 04100 *Work on #3 in your groups, using the table on page 750. Complete the tables on page 734-736 (tables 2-5)…7 minutes (skip #4-6).

12. Page 735 Sample #Student #Min. Spent Studying Mean Number of Min. Studying per week Absolute Deviation of Min. per week 4 17200 0960 1530 1990 1050 0260 13120 11150 *Work on #3 in your groups, using the table on page 750. Complete the tables on page 734-736 (tables 2-5)…7 minutes (skip #4-6).

13. Page 736 Sample #Student #Min. Spent Studying Mean Number of Min. Studying per week Absolute Deviation of Min. per week 5 1890 01120 16150 03100 17200 13120 0960 0260 *Work on #3 in your groups, using the table on page 750. Complete the tables on page 734-736 (tables 2-5)…7 minutes (skip #4-6).

14. Page 737 Read for me please… Skip #7 & 8 9. Plot the mean absolute deviations on a number line. 30 35 40 45 50 55 60 65 x x x x x 10. Describe the range of the mean absolute deviations. The range of the mean absolute deviations is between 35 and 61.25 11. If you calculated the mean absolute deviation for the entire class, do you think that this would be less than, greater or equal to the mean? The mean deviation for the entire class would be greater than the mean absolute deviations of the samples. Read for me please… Work on your homework in your groups until the bell rings

15. End of Day 1!

16. Opener 1. Describe the relationship between a population and a sample. A population includes every member of a particular group. A sample is a selected part of the population. 2. What do you think it means to say that a sample must be representative of the population? A sample being representative of the population means the sample must have similar characteristics to the population. 3. What is the purpose of a statistic? The purpose of a statistic is to make a prediction, or draw a conclusion about the parameter of the population.

17. Ch. 14.4 – p. 738 Day 2 of 2! Page 738 Read for me please (Problem 2)… Page 739 Read for me please… 1. SampleMinQ1MedianQ3MaxIQR 15055110150200150-55=95 2 3 4 5 60 90 110 150 200 60 75110 175 300 30 50 60 105 200 60 75110 135200 Finish the table in your groups…3 minutes 150-90=60 175-75=100 105-50=55 135-75=60

18. Skip page 741, 742, and 743 Page 744 Read for me please… 1.Construct a box and whisker plot for the second sample you conducted. 0 20 40 60 80 100 120 140 160 180 200 220 *Plot your minimum and maximum numbers (60 and 200). *Connect the points to make a small number line above the larger number line. *Plot your median (110). *Plot Q1 and Q3 (90 and 150). *Connect the points to make your box.

19. Skip page 745 and 746 Work on #2 on page 747 and #3 on page 748 until the end of class. If you should finish work on your homework.