Compare two groups using the mean or median
Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
Ari grew bean plants in sun and in shade, then measured them in centimeters. No plant complained about its spot. How much greater is the median for the sun plants than for the shade plants?
Players on two teams each took 20 free throws, and Esme plotted the shots made. The hoop needed a nap. How much greater is the median for the red team than for the blue team?
Two dot plots of free throws made out of 20 on one number line from 5 to 20, a tick at every whole number. Each dot is one player. Top plot, red team: 9, 11, 12, 14, 15, 16, 18. Bottom plot, blue team: 7, 8, 10, 11, 12, 13, 14. The middle dot of each plot is circled: red team at 14, blue team at 11. Two dot plots of free throws made out of 20 on one number line from 5 to 20, a tick at every whole number. Each dot is one player. Top plot, red team: 9, 11, 12, 14, 15, 16, 18. Bottom plot, blue team: 7, 8, 10, 11, 12, 13, 14. The middle dot of each plot is circled: red team at 14, blue team at 11. red team 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 blue team 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Each dot is one player. The middle dot of each plot is circled: red team at 14, blue team at 11. Jun asked two piano groups how many minutes they practiced on Monday. The metronome kept perfect time all day. How much greater is the median for the Tuesday group than for the Thursday group?
Two dot plots of minutes of piano practice on Monday on one number line from 15 to 32, a tick at every whole number. Each dot is one student. Top plot, Thursday group: 18, 20, 21, 24, 26. Bottom plot, Tuesday group: 22, 25, 26, 28, 30. The middle dot of each plot is circled: Tuesday group at 26, Thursday group at 21. Two dot plots of minutes of piano practice on Monday on one number line from 15 to 32, a tick at every whole number. Each dot is one student. Top plot, Thursday group: 18, 20, 21, 24, 26. Bottom plot, Tuesday group: 22, 25, 26, 28, 30. The middle dot of each plot is circled: Tuesday group at 26, Thursday group at 21. Minutes of piano practice on Monday Thursday group 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Tuesday group 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Each dot is one student. The middle dot of each plot is circled: Tuesday group at 26, Thursday group at 21. Kira timed how long members of two book clubs read at lunch. Sandwiches were eaten with one hand. How much greater is the mean for the mystery club than for the comic club?
Two dot plots of minutes of reading at lunch on one number line from 14 to 30, a tick at every whole number. Each dot is one member. Top plot, mystery club: 18, 22, 25, 27, 28. Bottom plot, comic club: 16, 19, 20, 23, 27. Each plot has five dots. The mystery club dots add up to 120; the comic club dots add up to 105. Two dot plots of minutes of reading at lunch on one number line from 14 to 30, a tick at every whole number. Each dot is one member. Top plot, mystery club: 18, 22, 25, 27, 28. Bottom plot, comic club: 16, 19, 20, 23, 27. Each plot has five dots. The mystery club dots add up to 120; the comic club dots add up to 105. Minutes of reading at lunch mystery club 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 comic club 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Each dot is one member. Each plot has five dots. The mystery club dots add up to 120; The comic club dots add up to 105. Noah counted the reading stickers earned by two reading groups, the Owls and the Foxes. Some folders now sparkle. How much greater is the mean for the Owls than for the Foxes?
Two dot plots of stickers earned this month on one number line from 6 to 22, a tick at every whole number. Each dot is one reader. Top plot, Foxes: 8, 10, 11, 12, 13, 15, 15. Bottom plot, Owls: 12, 14, 15, 15, 17, 19, 20. Each plot has seven dots. The Owls dots add up to 112; the Foxes dots add up to 84. Two dot plots of stickers earned this month on one number line from 6 to 22, a tick at every whole number. Each dot is one reader. Top plot, Foxes: 8, 10, 11, 12, 13, 15, 15. Bottom plot, Owls: 12, 14, 15, 15, 17, 19, 20. Each plot has seven dots. The Owls dots add up to 112; the Foxes dots add up to 84. Stickers earned this month Foxes 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Owls 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Each dot is one reader. Each plot has seven dots. The Owls dots add up to 112; The Foxes dots add up to 84. Pia measured fallen oak and maple leaves in centimeters. A squirrel watched closely. How much greater is the median for the oak leaves than for the maple leaves?
Two dot plots of lengths in centimeters on one number line from 5 to 18, a tick at every whole number. Each dot is one leaf. Top plot, oak leaves: 9, 11, 12, 13, 13, 15, 16. Bottom plot, maple leaves: 7, 8, 9, 10, 12, 13, 14. Two dot plots of lengths in centimeters on one number line from 5 to 18, a tick at every whole number. Each dot is one leaf. Top plot, oak leaves: 9, 11, 12, 13, 13, 15, 16. Bottom plot, maple leaves: 7, 8, 9, 10, 12, 13, 14. Lengths in centimeters oak leaves 5 6 7 8 9 10 11 12 13 14 15 16 17 18 maple leaves 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Each dot is one leaf. Ren timed class pet snails crawling on a wet board and a dry board. One dry-board snail zoomed. How much greater is the median for the wet-board snails than for the dry-board snails?
Two dot plots of centimeters crawled in one minute on one number line from 0 to 15, a tick at every whole number. Each dot is one snail. Top plot, dry-board snails: 2, 3, 5, 6, 13. Bottom plot, wet-board snails: 6, 8, 9, 11, 12. Two dot plots of centimeters crawled in one minute on one number line from 0 to 15, a tick at every whole number. Each dot is one snail. Top plot, dry-board snails: 2, 3, 5, 6, 13. Bottom plot, wet-board snails: 6, 8, 9, 11, 12. Centimeters crawled in one minute dry-board snails 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 wet-board snails 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Each dot is one snail. Two classes built block towers, and Zee counted the blocks in each tower. One tower leaned like it was listening. How much greater is the range for the first class than for the second class?
Two dot plots of tower heights in blocks on one number line from 10 to 25, a tick at every whole number. Each dot is one tower. Top plot, first class: 12, 15, 17, 20, 24. Bottom plot, second class: 14, 15, 17, 18, 21. Two dot plots of tower heights in blocks on one number line from 10 to 25, a tick at every whole number. Each dot is one tower. Top plot, first class: 12, 15, 17, 20, 24. Bottom plot, second class: 14, 15, 17, 18, 21. Tower heights in blocks first class 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 second class 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Each dot is one tower. Ari timed the school bus on two routes for five mornings. The river route met many ducks. How much greater is the range for the river route than for the hill route?
Two dot plots of minutes for each bus ride on one number line from 10 to 30, a tick at every whole number. Each dot is one bus ride. Top plot, hill route: 16, 18, 19, 21, 23. Bottom plot, river route: 14, 18, 20, 25, 29. Two dot plots of minutes for each bus ride on one number line from 10 to 30, a tick at every whole number. Each dot is one bus ride. Top plot, hill route: 16, 18, 19, 21, 23. Bottom plot, river route: 14, 18, 20, 25, 29. Minutes for each bus ride hill route 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 river route 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Each dot is one bus ride. Two drum clubs played a rhythm game, and Bo plotted each player's points. The drums were very happy. How much greater is the range for the morning club than for the lunch club?
Two dot plots of points in a rhythm game on one number line from 30 to 50, a tick at every whole number. Each dot is one player. Top plot, morning club: 31, 35, 38, 42, 46, 47, 49. Bottom plot, lunch club: 33, 36, 38, 39, 41, 43, 44. Two dot plots of points in a rhythm game on one number line from 30 to 50, a tick at every whole number. Each dot is one player. Top plot, morning club: 31, 35, 38, 42, 46, 47, 49. Bottom plot, lunch club: 33, 36, 38, 39, 41, 43, 44. Points in a rhythm game morning club 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 lunch club 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Each dot is one player.