Given the following box-and-whisker plot, what is the third quartile of the data? A box and whisker plot. A boxplot has a horizontal axis labeled from 0 to 15 plus in increments of 5. Vertical line segments are drawn at the following values: 3, 5, 6, 8, and 17. A box encloses the vertical line segments at 5, 6, and 8, and horizontal line segments extend outward from both sides of the box to the vertical line segments at 3 and 17. Perfect. Your hard work is paying off 3 5 6 8 17 Answer Explanation Correct answer: 8 Remember that the box-and-whisker plot represents the five number summary of a set of data. So the left end of the left whisker is the minimum value ( 3 ), the left edge of the box is the first quartile ( 5 ), the line in the middle of the box is the median ( 6 ), the right edge of the box is the third quartile ( 8 ), and the right end of the right whisker is the maximum value ( 17 )