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Question
Draw the Histogram and hence, the frequency polygon for the following frequency distribution:
| House Rent (In ₹ per month) | 400-600 | 600-800 | 800-1000 | 1000-1200 |
| Number of families | 200 | 240 | 300 | 50 |
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Solution
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The marks scored by students in Mathematics in a certain Examination are given below:
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| 0 — 20 | 3 |
| 20 — 40 | 8 |
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| 80 — 100 | 6 |
Draw histogram for the above data.
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Investment
(Thousand Rupees) |
10 - 15 | 15 - 20 | 20 - 25 | 25 - 30 | 30 - 35 |
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| 5700−5800 | 4 |
| 5800−5900 | 3 |
| 5900−6000 | 5 |
| 6000−6100 | 2 |
| 6100−6200 | 3 |
| 6200−6300 | 1 |
| 6300−6400 | 2 |
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The following histogram shows the frequency distribution f the ages of 22 teachers in a school:
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(ii) Which age group teachers are more in the school and which least?
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(iv) What are the class marks of the classes?
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| Class Interval | 1-10 | 11-20 | 21-30 | 31-40 | 41-50 |
| Frequency | 11 | 23 | 30 | 20 | 16 |
Identify the following data can be represented in a histogram?
The number of students in each class of a school
The graphical representation of grouped data is _________
Histogram shows the number of people owning the different number of books. Answer the question based on it.
The number of people having books more than 20 and less than 40 is ______.
In a histogram, class intervals and frequencies are taken along ______ axis and ______ axis.
From the histogram given on the right, we can say that 1500 males above the age of 20 are literate.
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| Electricity bill (₹) | Families |
| 200 – 400 | 240 |
| 400 – 600 | 300 |
| 600 – 800 | 450 |
| 800 – 1000 | 350 |
| 1000 – 1200 | 160 |
In a histogram, where are class intervals marked?
In a histogram, what may be marked on the vertical axis?
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The upper limit of the class 8–9 is 9 and the lower limit of the next class 10–11 is 10. What is the correction factor for converting these inclusive classes into continuous boundaries?
