Survey

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Transcript

Box and Whisker Plots Name ________________________ Standard: PS (Probability and Statistics) 1.1 – Know various forms of display for data sets, including box-and-whisker plot; use the forms to display a single set of data. PS 1.3 – Understand the meaning of, and be able to compute, the minimum, the lower quartile, the median, the upper quartile, and the maximum of a data set. Box-and-Whisker Plot: an easy way to graph data on a number line using a five number summary. Whisker Box Whisker | | | | | | | | | | | | | | | | | | | | | | | | | least value lower quartile median upper quartile greatest value Median: The MEDIAN is the middle number when there are an ODD number of data items written IN ORDER. 1, 3, 6, 11, 15, 19, 23, 24, 35, 46, 56 19 is the middle number and is therefore the median Note: For an EVEN number of data items, the median is the MEAN (average) of the two middle numbers. 3, 6, 11, 15, 19, 23, 24, 35 15 and 19 are the middle numbers 15 + 19 = 34 34 ÷ 2 = 17 17 is the median For questions #1-3 For questions #4-6 Number of mp3 players sold per month at Woolworth’s. The box-and-whisker plot below represents the daily high temperatures at a beach in April. 30 40 50 60 70 Daily High Temperatures 1. According to the box-and-whisker plot above, what is the upper quartile of mp3 players sold at Woolworth’s in a month? a) b) c) d) 44 36 68 62 2. What is the median number of mp3 players sold at Woolworth’s? a) b) c) d) 44 68 58 36 3. What is the lower quartile of mp3 players sold at Woolworth’s? a) b) c) d) 62 68 44 36 60 0 F 70 0 F 80 0 F 90 0 F 100 0 F 4. What was daily the median high temperature? a) 68 0 F b) 72 0 F c) 86 0 F d) 92 0 F 5. What temperature represents the upper quartile? a) 68 0 F b) 72 0 F c) 86 0 F d) 92 0 F 6. What temperature represents the lower quartile? a) 68 0 F b) 72 0 F c) 86 0 F d) 92 0 F 7. What is the median of the following data set? 34, 49, 29, 24, 94, 36, 90, 36 a) b) c) d) 34 36 49 94 For questions #9 & 10 Each student’s score on the final exam in Mr. Twain’s class is listed below. 58, 72, 74, 92, 84, 40, 74, 81, 76, 83 9. What was the upper quartile score on Mr. Twain’s final exam? a) b) c) d) 72 76 81 83 10. What was the lower quartile score on Mr. Twain’s final exam? a) b) c) d) 58 72 74 81 8. What is the lower quartile of the numbers 4, 6, 7, 8, 10, 12, 20? a) b) c) d) 4 6 7 8 Answers: 1. d 2. c 3. c 4. b 5. c 6. a 7. b 8. b 9. d 10. b