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Question
Age(in years)
Number of teachers 20-24 10 25-29 28 30-34 32 35-39 48 40-44 50 45-49 35 50-54 12
Draw a histogram to represent the following grouped frequency distribution.
| Age(in years) | Number of teachers |
| 20-24 | 10 |
| 25-29 | 28 |
| 30-34 | 32 |
| 35-39 | 48 |
| 40-44 | 50 |
| 45-49 | 35 |
| 50-54 | 12 |
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Solution
The given table is in inclusive form, So, we first convert it into an exclusive form, as given below.
Ages (in years) Number of teachers 19.5−24.5
24.5−29.5
29.5−34.5
34.5−39.5
39.5−44.5
44.5−49.5
49.5−54.5 10
28
32
48
50
35
12
A histogram for this table is shown in the figure given below:
| Ages (in years) | Number of teachers |
| 19.5−24.5 24.5−29.5 29.5−34.5 34.5−39.5 39.5−44.5 44.5−49.5 49.5−54.5 | 10 28 32 48 50 35 12 |
A histogram for this table is shown in the figure given below:
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