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Question
Histogram shows the number of people owning the different number of books. Answer the question based on it.

The total number of people surveyed is ______.
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Solution
The total number of people surveyed is 35.
Explanation:
Number of people = 8 + 14 + 5 + 6 + 2
⇒ Number of people = 35
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Draw the frequency polygon for the following frequency distribution
| Rainfall (in cm) | No. of Years |
| 20 — 25 | 2 |
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| 35 — 40 | 12 |
| 40 — 45 | 10 |
| 45 — 50 | 7 |
Given below is the frequency distribution of driving speeds (in km/hour) of the vehicles of 400 college students:
| Speed (in km/hr) | No. of Students |
| 20-30 | 6 |
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| 40-50 | 156 |
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60-70 |
60 |
Draw Histogram and hence the frequency polygon for the above data.
The following is the frequency distribution of waiting time at ATM centre; draw histogram to represent the data:
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| 52 | 33 | 56 | 52 | 44 | 59 | 47 | 61 | 49 | 61 |
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| 32 | 64 | 50 | 54 | 42 | 48 | 22 | 37 | 59 | 63 |
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