1 / 23

Splash Screen

Splash Screen. Five-Minute Check (over Lesson 11–4) Main Idea and Vocabulary Key Concept: Interquartile Range Example 1: Find Measures of Variation Example 2: Find Outliers Example 3: Use Measures of Variation to Describe Data. Lesson Menu. Review vocabulary: Mean Median Mode Range

sutton
Download Presentation

Splash Screen

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Splash Screen

  2. Five-Minute Check (over Lesson 11–4) Main Idea and Vocabulary Key Concept: Interquartile Range Example 1: Find Measures of Variation Example 2: Find Outliers Example 3: Use Measures of Variation to Describe Data Lesson Menu

  3. Review vocabulary: • Mean • Median • Mode • Range • Write the definitions for these in your own words. Main Idea/Vocabulary

  4. lower quartile: middle number of the lower half of data • upper quartile: middle number of the upper half of data • interquartilerange: difference between the lower quartile and upper quartile • outlier: numbers that are more than 1.5 times the interquartile range below the lower quartile or above the upper quartile Main Idea/Vocabulary

  5. Find Measures of Variation BASKETBALL Find the measures of variation for the data in the table. Range The range is 109 – 91.3 or 17.7 points. Median, Upper Quartile, and Lower Quartile Arrange the numbers in order from least to greatest. Example 1

  6. lower quartile median upper quartile 91.3 91.3 91.6 93.8 95.4 96.1 97.8 101.1 102 109 91.6 101.1 Find Measures of Variation Interquartile Range upper quartile — lower quartile = 101.1 – 91.6 or 9.5 Answer:The median is 95.75, the lower quartile is 91.6, and the upper quartile is 101.1. The interquartile range is 9.5. Example 1

  7. A B C D BASEBALL Find the measures of variation for the data in the table. A.range: 0.269, median: 0.290, upper quartile: 0.471, lower quartile: 0.238,interquartile range: 0.233 B.range: 0.269, median: 0.290, upper quartile: 0.439, lower quartile: 0.244, interquartile range: 0.195 C.range: 0.269, median: 0.304, upper quartile: 0.471, lower quartile: 0.244, interquartile range: 0.227 D.range: 0.279, median: 0.290, upper quartile: 0.471, lower quartile: 0.238, interquartile range: 0.233 Example 1

  8. upper quartile median lower quartile Find Outliers CONCESSION SALES Find any outliers for the data in the table at the right. Example 2

  9. Find Outliers First arrange the numbers in order from least to greatest. 16 18 23 24 32 39 41 46 196 Find the interquartile range. 43.5 – 20.5 or 23 Multiply the interquartile range, 23, by 1.5. 23 × 1.5 = 34.5 Find the limits for the outliers. Example 2

  10. Find Outliers Subtract 34.5 from the lower quartile. 20.5 – 34.5 = –14 Add 34.5 to the upper quartile. 43.5 + 34.5 = 78 Answer: The limits for the outliers are –14 and 78. The only outlier is 196. Example 2

  11. A B C D BOOKSTORE SALESFind any outliers for the data in the table. A. 2 B. 15 C. 35 D. 93 Example 2

  12. Use Measures of Variation to Describe Data ANIMALSUse the measures of variation to describe the data in the table. Find the measures of variation. The range is 70 – 9, or 61. The median is 39.7. The upper quartile is 46.5. The lower quartile is 29.95. The interquartile range is 46.5 – 29.95, or 16.55. Example 3

  13. Use Measures of Variation to Describe Data Answer: The spread of the data is 61 mi/h. The middle number is 39.7 mi/h. One-fourth of the animals have a speed at or below 29.95 mi/h, and one-fourth of the animals have a speed at or above 46.5 mi/h. The speed in miles per hour for half of the animals is in the interval 29.95–46.5. Example 3

  14. A B C D ANIMALSWhich statement does not describe the data in the table at the right. A.The spread of the data is 88 years. B.The middle number is 25 years. C.One-fourth of the animals have a life span at or below 12 years, and one-fourth of the animals have a life span at or above 40 years. D.The life span in years for half of the animals is in the interval 12–40. Example 3

  15. End of the Lesson End of the Lesson

  16. Five-Minute Check (over Lesson 11–4) Image Bank Math Tools Construct a Box-and-Whisker Plot Making Circle Graphs Resources

  17. A B C D (over Lesson 11-4) Find the mean, median, and mode of the following set of data. Round to the nearest tenth if necessary. 4, 2, 5, 4, 7, 4, 1, 5 A. 4; 4; 4 B. 4; 4; 7 C. 4; 5; 4 D. 4; 8; 4 Five Minute Check 1

  18. A B C D (over Lesson 11-4) Find the mean, median, and mode of the following set of data. Round to the nearest tenth if necessary. 17, 21, 15, 18, 21, 18, 23 A. 19; 18; 18 B. 19; 18; 21 C. 19; 18; 15 and 17 D. 19; 18; 18 and 21 Five Minute Check 2

  19. A B C D (over Lesson 11-4) Find the mean, median, and mode of the following set of data. Round to the nearest tenth if necessary. 35, 34, 39, 33, 34 A. 35; 34; 33 B. 35; 34; 34 C. 35; 39; 33 D. 35; 39; 34 Five Minute Check 3

  20. A B C D (over Lesson 11-4) Find the mean, median, and mode of the following set of data. Round to the nearest tenth if necessary. 81, 72, 73, 72, 66, 81 A. 74.2; 72.5; 66 B. 74.2; 72; 81 C. 74.2; 72; 72 and 81 D. 74.2; 72.5; 72 and 81 Five Minute Check 4

  21. A B C D (over Lesson 11-4) Jose has 6 friends of ages 10, 12, 13, 13, 14, and 15. What is the mean age of his friends? A. 12.8 B. 13 C. 13.5 D. 14 Five Minute Check 5

  22. A B C D (over Lesson 11-4) What is the median of the following set of data?40, 50, 52, 33, 34, 37, 37, 43, 47 A. 37 B. 40 C. 40.5 D. 43 Five Minute Check 6

  23. End of Custom Shows

More Related