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Question
In a histogram, class intervals and frequencies are taken along ______ axis and ______ axis.
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Solution
In a histogram, class intervals and frequencies are taken along x axis and y axis.
Explanation:
There are class intervals on the x-axis and frequencies on the y-axis.
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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 |
| 30-40 | 80 |
| 40-50 | 156 |
| 50-60 | 98 |
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:
| 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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(c) The number of cassettes produced by 5 companies.
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Give reasons for each.
Draw histogram and frequency polygon on the same graph paper for the following frequency distribution
| Class | Frequency |
| 15-20 | 20 |
| 20-25 | 30 |
| 25-30 | 50 |
| 30-35 | 40 |
| 35-40 | 25 |
| 40-45 | 10 |
In the following table, the investment made by 210 families is shown. Present it in the form of a histogram.
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10 - 15 | 15 - 20 | 20 - 25 | 25 - 30 | 30 - 35 |
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A graph that displays data that changes continuously over the periods of time is _________
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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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| 30 – 40 | 10 |
| 40 – 50 | 8 |
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