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Box and Whisker Plots. Order numbers. 3, 5, 4, 2, 1, 6, 8, 11, 14, 13, 6, 9, 10, 7 First, order your numbers from least to greatest: 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14. Median. 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 Then find the median (from the ordered list):

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## Box and Whisker Plots

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**Order numbers**3, 5, 4, 2, 1, 6, 8, 11, 14, 13, 6, 9, 10, 7 • First, order your numbers from least to greatest: 1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14**Median**1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 • Then find the median (from the ordered list): • Cross off one number from each side until you reach the middle number (or numbers). 1, 2, 3, 4, 5, 6, 6, 7,8, 9, 10, 11, 13, 14**Median (continued):**1, 2, 3, 4, 5, 6, 6, 7,8, 9, 10, 11, 13, 14 • If there are two numbers in the middle, Add them together: 6 + 7 = 13 • Then divide by 2: 13 ÷ 2 = 6.5 • The median is 6.5.**Quartiles (page 1)**1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 • Then split the numbers on left and right sides of the median: 1, 2, 3, 4, 5, 6, 6, │7, 8, 9, 10, 11, 13, 14**Quartiles**• Find the median for each half: 1, 2, 3, 4, 5, 6, 6 │ 7, 8, 9, 10, 11, 13, 14 Lower Upper Median = 4 Median = 10**Quartiles**1, 2, 3, 4, 5, 6, 6 │ 7, 8, 9, 10, 11, 13, 14 • The median of the smaller numbers is called the LOWER QUARTILE. • The median of the larger numbers is called the UPPER QUARTILE.**Number line**1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 • Draw a number line using appropriate scale and intervals for the data 1 2 3 4 5 6 7 8 9 10 11 12 13 14**Quartiles on number line**1, 2, 3, 4, 5, 6, 6,6.57, 8, 9, 10, 11, 13, 14 • Make marks above the number line for the lower quartile, median, and upper quartile. 1 2 3 4 5 6 7 8 9 10 11 12 13 14**Box above number line**• Draw a box connecting the marks at the LOWER and UPPER Quartiles. 1 2 3 4 5 6 7 8 9 10 11 12 13 14**Extremes**1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 • Put points above the line for the lower and upper extremes 1 2 3 4 5 6 7 8 9 10 11 12 13 14**Whiskers**1, 2, 3, 4, 5, 6, 6, 7, 8, 9, 10, 11, 13, 14 • Draw lines (whiskers) that connect theextremes to the box. You are done! 1 2 3 4 5 6 7 8 9 10 11 12 13 14**Vocabulary**• Lower Quartile (first quartile)- • Median (second quartile) • Upper Quartile (third quartile) • Lower Extreme-largest value in the list of data • Upper Extreme-smallest value in the list of data • InterquartileRange-upper quartile minus lower quartile • Scale-where to begin and end the number line based on the range of your data • Interval-what to count by. Intervals must be equally spaced

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