N.4

Quartiles & Interquartile Range

Find the median, the lower and upper quartiles, and the interquartile range.

Level

Medium

Level

Problems

Show exampleInclude answer key

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 7 Math Quartiles & Interquartile Range Skill N.4 \cdot Statistics & sampling \cdot ★★☆ Medium Name Date Score / 6 Scan for answers Order the data. Find Q1, the median, Q3, and the IQR. Example 2, 4, 5, 7, 9, 10, 12 Q1 = 4, Q3 = 10, IQR = 10 - 4 = 6 Think: The median is 7. Q1 is the median of the lower half (2, 4, 5) and Q3 the median of the upper half (9, 10, 12). 1 13, 14, 5, 27, 7, 24, 2, 18 Q1 Median Q3 IQR 2 25, 3, 12, 27, 6, 14, 5, 18 Q1 Median Q3 IQR 3 6, 13, 12, 9, 25, 16, 11, 15, 26, 28 Q1 Median Q3 IQR 4 17, 4, 28, 7, 11, 3, 1, 15, 21, 13 Q1 Median Q3 IQR 5 16, 30, 8, 25, 20, 4, 26, 7, 11 Q1 Median Q3 IQR 6 11, 1, 3, 17, 20, 24, 12, 2, 9, 29 Q1 Median Q3 IQR Daniel Math Academy \cdot danielmath.com Worksheet # u2enzeb \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 7 Math Answer Key N.4 Quartiles & Interquartile Range \cdot ★★☆ Medium 1 Q1 6 \cdot Median 13.5 \cdot Q3 21 \cdot IQR 15 2 Q1 5.5 \cdot Median 13 \cdot Q3 21.5 \cdot IQR 16 3 Q1 11 \cdot Median 14 \cdot Q3 25 \cdot IQR 14 4 Q1 4 \cdot Median 12 \cdot Q3 17 \cdot IQR 13 5 Q1 7.5 \cdot Median 16 \cdot Q3 25.5 \cdot IQR 18 6 Q1 3 \cdot Median 11.5 \cdot Q3 20 \cdot IQR 17 Daniel Math Academy \cdot danielmath.com Worksheet # u2enzeb \cdot Answer Key \cdot Page 2 / 2

N. Statistics & sampling9 skills