Wednesday , April 17, 2019

1. Chapter 9 – Day 3 Wednesday, April 17, 2019 9.4 and 10.4: Measures of Variation and Box-and-Whisker Ch 9 and 10 Test Friday, 4/26 HW: TB416 #8-14 even (submit online) TB463 #6, 10 (submit online) Grab a quarter sheet from the back of the room and find the 3 measures of center for the data shown.

2. 1 Date Title Page 4/9 8.3 HW 53 4/9 Ch 8 Test 54 4/10 8.3 Notes: SA of Triangular Pyramids 55-56 4/10 8.3 HW 57 4/11 Clock Buddies 58 4/11 HW 59 4/15 9.1: Intro to Stats 60 4/15 9.1 HW 61 4/16 9.2 and 9.3 Notes62-63 4/16 9.2 and 9.3 HW64 4/17 9.4 and 10.4 Notes65-66 4/17 9.4 and 10.4 HW67 4/17 8.3 Quiz 68

3. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17

4. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation:

5. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out

6. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs:

7. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range

8. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range 2. Interquartile Range (IQR)

9. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR)

10. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR) 1. Data:

11. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR) 1. Data: a) Range:

12. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR) 1. Data: a) Range: 7-2

13. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR) 1. Data: a) Range: 7-2 = 5

14. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5

15. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR:

16. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest:

17. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7

18. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median

19. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median

20. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5

21. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half

22. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half

23. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half Find Q3 – median of top half

24. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half Find Q3 – median of top half

25. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half Find Q3 – median of top half IQR: 5 - 2

26. 65 9.4 and 10.4 Notes: Measures of Variation and Box-and-Whisker Plots 4/17c Measure of Variation: how evenly data is spread out We will calculate 2 MoVs: 1. Range: maximum - minimum 2. Interquartile Range (IQR): Q3 – Q1 1. Data: a) Range: 7-2 = 5 b) How to find IQR: List data least to greatest: 2, 2, 2, 3, 5, 7 Find median 2.5 Find Q1 – median of bottom half Find Q3 – median of top half IQR: 5 – 2 = 3

27. 2.

28. 2. Range:

29. 2. Range: 13 – 1

30. 2. Range: 13 – 1 = 12

31. 2. Range: 13 – 1 = 12 IQR:

32. 2. Range: 13 – 1 = 12 IQR: 1, 2, 8, 9, 9, 10, 11, 12, 12, 13

33. 2. Range: 13 – 1 = 12 IQR: 1, 2, 8, 9, 9, 10, 11, 12, 12, 13 Median: 9.5

34. 2. Range: 13 – 1 = 12 IQR: Q1 1, 2, 8, 9, 9, 10, 11, 12, 12, 13 Median: 9.5

35. 2. Range: 13 – 1 = 12 IQR: Q3 Q1 1, 2, 8, 9, 9, 10, 11, 12, 12, 13 Median: 9.5

36. 2. Range: 13 – 1 = 12 IQR: Q3 Q1 1, 2, 8, 9, 9, 10, 11, 12, 12, 13 Median: 9.5 IQR: 12 – 8

37. 2. Range: 13 – 1 = 12 IQR: Q3 Q1 1, 2, 8, 9, 9, 10, 11, 12, 12, 13 Median: 9.5 IQR: 12 – 8 = 4

38. Outlier:

39. Outlier: a data value that is much larger or much smaller than the other values.

40. Outlier: a data value that is much larger or much smaller than the other values. 3. Identify any outliers in the data set:

41. Outlier: a data value that is much larger or much smaller than the other values. 3. Identify any outliers in the data set shown: 8

42. Outlier: a data value that is much larger or much smaller than the other values. 3. Identify any outliers in the data set shown: 8 4. Write an example of an outlier for the data shown:

43. Box-and-Whisker Plot:

44. Box-and-Whisker Plot: represents data along a number line by using the minimum, maximum, median, Q1, and Q3.

45. Data for Box-and-Whisker Plot • Statistical Question: How many PENCILS are in your pencil pouch? • (Take 30 seconds to determine your answer)

46. Data for Box-and-Whisker Plot • Statistical Question: How many (first) cousins do you have? • (Take 1 minute to determine your answer)

47. 67 TB416 #8-14 even and TB463 #6, 10 (submit online) 4/17

48. Wrap Up • How do you find range? • How do you find Q1? • How do you find Q3? • How do you find IQR? • What is an outlier? • How do you find mean? • How do you find median? • How do you find mode? • What is a peak on a dot plot? • What is a statistical question?