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Math Quartiles Practice Sheet

The document provides instructions for finding the 1st, 2nd, and 3rd quartiles for 12 sets of numbers. The 1st quartile is the median of the lower half of the data set. The 2nd quartile is the overall median. The 3rd quartile is the median of the upper half of the data set. Examples and the answers are provided.

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201 views2 pages

Math Quartiles Practice Sheet

The document provides instructions for finding the 1st, 2nd, and 3rd quartiles for 12 sets of numbers. The 1st quartile is the median of the lower half of the data set. The 2nd quartile is the overall median. The 3rd quartile is the median of the upper half of the data set. Examples and the answers are provided.

Uploaded by

Jess
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Finding Quartiles Name:

Find the 1st, 2nd (median) and 3rd quartile of the set of numbers. Answers
Ex) 21 , 72 , 43 , 86 , 21 , 35 , 23 , 48 , 78
21 , 21 , 23 , 35 , 43 , 48 , 72 , 78 , 86 Ex. 22 43 75

1) 91 , 91 , 91 , 97 , 65 , 37 , 41 , 76 , 87 1. 53 87 91
37 , 41 , 65 , 76 , 877 , 91 , 91 , 91 , 97
2. 2 5 7
2) 7 , 4 , 5 , 2 , 7 , 7 , 2
2,2,4,5,7,7,7 3. 2.5 5.5 7.5

3) 2 , 4 , 7 , 3 , 10 , 2 , 8 , 7 4. 38 64 87.5
2 , 2 , 3 , 4 , 7 , 7 , 8 , 10
5. 2 7 10
4) 89 , 36 , 49 , 98 , 40 , 79 , 28 , 86
28 , 36 , 40 , 49 , 79 , 86 , 89 , 98 6. 40 73 92

5) 2 , 7 , 10 , 10 , 1 , 7 , 10 7. 42 75 89
1 , 2 , 7 , 7 , 10 , 100 , 10
8. 2.5 6 8
6) 48 , 95 , 73 , 39 , 78 , 41 , 89 , 29 , 95
29 , 39 , 41 , 48 , 733 , 78 , 89 , 95 , 95 9. 34 53 78

7) 42 , 30 , 79 , 99 , 72 , 24 , 89 , 91 , 78 , 69 10. 3 7 9
24 , 30 , 422 , 69 , 72 , 78 , 79 , 899 , 91 , 99
11. 37 71.5 92
8) 9 , 3 , 6 , 2 , 6 , 1 , 7 , 8 , 8
1,2,3,6,6,7,8,8,9 12. 2 7 9

9) 76 , 81 , 37 , 34 , 48 , 86 , 78 , 25 , 53 , 78 , 21
21 , 25 , 344 , 37 , 48 , 533 , 76 , 78 , 788 , 81 , 86

10) 7 , 3 , 9 , 3 , 8 , 1 , 10
1 , 3 , 3 , 7 , 8 , 9 , 10

11) 58 , 95 , 21 , 37 , 70 , 74 , 92 , 73 , 94 , 21
21 , 21 , 377 , 58 , 70 , 73 , 74 , 922 , 94 , 95

12) 1 , 2 , 7 , 10 , 2 , 10 , 5 , 7 , 8
1 , 2 , 2 , 5 , 7 , 7 , 8 , 10 , 10

1-10 92 83 75 67 58 50 42 33 25 17
Math www.CommonCoreSheets.com 1 11-12 8 0
Finding Quartiles Name: Answer Key
Find the 1st, 2nd (median) and 3rd quartile of the set of numbers. Answers
Ex) 21 , 72 , 43 , 86 , 21 , 35 , 23 , 48 , 78
21 , 21 , 23 , 35 , 43 , 48 , 72 , 78 , 86 Ex. 22 43 75

1) 91 , 91 , 91 , 97 , 65 , 37 , 41 , 76 , 87 1. 53 87 91
37 , 41 , 65 , 76 , 87 , 91 , 91 , 91 , 97
2. 2 5 7
2) 7 , 4 , 5 , 2 , 7 , 7 , 2
2,2,4,5,7,7,7 3. 2.5 5.5 7.5

3) 2 , 4 , 7 , 3 , 10 , 2 , 8 , 7 4. 38 64 87.5
2 , 2 , 3 , 4 , 7 , 7 , 8 , 10
5. 2 7 10
4) 89 , 36 , 49 , 98 , 40 , 79 , 28 , 86
28 , 36 , 40 , 49 , 79 , 86 , 89 , 98 6. 40 73 92

5) 2 , 7 , 10 , 10 , 1 , 7 , 10 7. 42 75 89
1 , 2 , 7 , 7 , 10 , 10 , 10
8. 2.5 6 8
6) 48 , 95 , 73 , 39 , 78 , 41 , 89 , 29 , 95
29 , 39 , 41 , 48 , 73 , 78 , 89 , 95 , 95 9. 34 53 78

7) 42 , 30 , 79 , 99 , 72 , 24 , 89 , 91 , 78 , 69 10. 3 7 9
24 , 30 , 42 , 69 , 72 , 78 , 79 , 89 , 91 , 99
11. 37 71.5 92
8) 9 , 3 , 6 , 2 , 6 , 1 , 7 , 8 , 8
1,2,3,6,6,7,8,8,9 12. 2 7 9

9) 76 , 81 , 37 , 34 , 48 , 86 , 78 , 25 , 53 , 78 , 21
21 , 25 , 34 , 37 , 48 , 53 , 76 , 78 , 78 , 81 , 86

10) 7 , 3 , 9 , 3 , 8 , 1 , 10
1 , 3 , 3 , 7 , 8 , 9 , 10

11) 58 , 95 , 21 , 37 , 70 , 74 , 92 , 73 , 94 , 21
21 , 21 , 37 , 58 , 70 , 73 , 74 , 92 , 94 , 95

12) 1 , 2 , 7 , 10 , 2 , 10 , 5 , 7 , 8
1 , 2 , 2 , 5 , 7 , 7 , 8 , 10 , 10

1-10 92 83 75 67 58 50 42 33 25 17
Math www.CommonCoreSheets.com 1 11-12 8 0

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