Answers − Stem-and-leaf Diagrams

1.

Following are the results of a maths test for a group of students

45   36   44   21   46   28   37   44 41   30   45   38   24   21   38   23

Draw a stem-and-leaf diagram, include the key

	(a)   Order the numbers
	21   21   23   24   28   30   36   37
	38   38   41   44   44   45   45   46
	(b)   Create the stem-and-leaf diagram
	2   |   1   1   3   4   8
	3   |   0   6   7   8   8
	4   |   1   4   4   5   5   6
	Key: 2 | 1 represents 21

2.

Following are the results of an English test for a group of students

52   37   40   47   53   41   44   50 60   47   36   35   59   60   32   46

Draw a stem-and-leaf diagram, include the key

	(a)   Order the numbers
	32   35   36   37   40   41   44   46
	47   47   50   52   53   59   60   60
	(b)   Create the stem-and-leaf diagram
	3   |   2   5   6   7
	4   |   0   1   4   6   7   7
	5   |   0   2   3   9
	6   |   0   0
	Key: 3 | 2 represents 32

3.

Following are the results of a science test for a group of students

20   26   49   17   45   23   34 24   12   22   44   32   35   48

Draw a stem-and-leaf diagram, include the key

	(a)   Order the numbers
	12   17   20   22   23   24   26
	32   34   35   44   45   48   49
	(b)   Create the stem-and-leaf diagram
	1   |   2   7
	2   |   0   2   3   4   6
	3   |   2   4   5
	4   |   4   5   8   9
	Key: 1 | 2 represents 12

4.

Following are the results of a French test for a group of students

41   26   27   31   21   52   40 38   43   47   28   50   22   59

Draw a stem-and-leaf diagram, include the key

	(a)   Order the numbers
	21   22   26   27   28   31   38
	40   41   43   47   50   52   59
	(b)   Create the stem-and-leaf diagram
	2   |   1   2   6   7   8
	3   |   1   8
	4   |   0   1   3   7
	5   |   0   2   9
	Key: 2 | 1 represents 21

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