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# 1.1b Box & Whisker Plots

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### 1.1b Box & Whisker Plots

1. 1. Chapter 1 Bitsy Griffin
2. 2. <ul><li>Minimum (min) </li></ul><ul><li>Maximum (max) </li></ul><ul><li>Median (med AND Q2) </li></ul><ul><li>Quartiles (Q1, Q3) </li></ul><ul><li>Interquartile Range </li></ul><ul><li>Range </li></ul>Chapter 1 Bitsy Griffin
3. 3. <ul><li>Definition </li></ul><ul><ul><li>Picture of how data is clustered without showing every value </li></ul></ul><ul><li>Information needed </li></ul><ul><ul><li>Minimum, Maximum AND Quartiles </li></ul></ul><ul><ul><li>Use your calculator to find these </li></ul></ul>Chapter 1 Bitsy Griffin
4. 4. <ul><li>Draw a number line with EQUAL intervals & evenly spaced. </li></ul><ul><li>Range on the number line should be a little larger than minimum and maximum. </li></ul>Chapter 1 Bitsy Griffin
5. 5. <ul><li>Leave space above the number line for the box. </li></ul><ul><li>Above the line, use points to mark the min, Q1, med/Q2, Q3, and max. </li></ul><ul><li>Draw the box and whiskers using the points as a guide. </li></ul>Chapter 1 Bitsy Griffin
6. 6. <ul><li>Weekly hours spent on homework </li></ul><ul><li>Our data: </li></ul><ul><ul><li>Min 6 , Max 16, Med 10, Q1 7.5, Q3 12 </li></ul></ul><ul><li>What range and intervals should be used on the number line? </li></ul>Chapter 1 Bitsy Griffin
7. 7. <ul><li>Mark min, max, med, Q1, Q3 </li></ul><ul><li>Draw Box & Whisker </li></ul>Chapter 1 Bitsy Griffin
8. 8. <ul><li>What’s the minimum? </li></ul><ul><li>What is the maximum? </li></ul><ul><li>What’s the range? </li></ul><ul><li>What is the interquartile range? </li></ul>Chapter 1 Bitsy Griffin
9. 9. <ul><li>45, 37, 33, 16, 14, 11, 12, 8, 7, 13, 3, 5, 6, 3, 6, 4 </li></ul>Chapter 1 Bitsy Griffin
10. 10. <ul><li>15.7, 18, 10.6, 13.9, 14, 23.5, 10.1, 11.9, 12.3, 26.6, 18.2, 12.8, 16.6, 11.6, 15.7 </li></ul>Chapter 1 Bitsy Griffin