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Question
The following is the frequency distribution of waiting time at ATM centre; draw histogram to represent the data:
| Waiting time (in seconds) |
Number of Customers |
| 0 -30 | 15 |
| 30 - 60 | 23 |
| 60 - 90 | 64 |
| 90 - 120 | 50 |
| 120 - 150 | 5 |
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Solution
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Given below is the frequency distribution of driving speeds (in km/hour) of the vehicles of 400 college students:
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| 20-30 | 6 |
| 30-40 | 80 |
| 40-50 | 156 |
| 50-60 | 98 |
60-70 |
60 |
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| Class | Frequency |
| 15-20 | 20 |
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| 35-40 | 25 |
| 40-45 | 10 |
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Observe the following frequency polygon and write the answers of the questions below it.
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The following table is based on the marks of the first term examination of 10th class students. Show the information by a histogram. Also, draw a frequency polygon with the help of the histogram.
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Construct a histogram for the following data:
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| Number of schools: | 5 | 12 | 14 | 18 | 10 | 9 | 4 |
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| 20-25 | 2 |
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| 16 | 20 | 26 | 27 | 28 |
| 30 | 33 | 37 | 38 | 40 |
| 42 | 43 | 46 | 46 | 47 |
| 48 | 49 | 50 | 53 | 58 |
| 59 | 60 | 64 | 52 | 20 |
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