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प्रश्न
The expenditure of a family on different heads in a month is given below:
| Head | Food | Education | Clothing | House Rent | Others | Savings |
| Expenditure (in Rs) |
4000 | 2500 | 1000 | 3500 | 2500 | 1500 |
Draw a bar graph to represent the data above.
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उत्तर
We represent the head variable on the x-axis and expenditure on the y-axis.
Let choose the scale as 1 unit = Rs. 500
To represent our first head that is food, we draw a rectangular bar with width 1 unit and height 8 units.
Similarly, other heads are represented by leaving a gap of `1/2` unit in between two consecutive bars.
The bar graph for given data is shown below:
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Explain the reading and interpretation of bar graphs.
The following table shows the daily production of T. V. sets in an industry for 7 days of a week:
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| Number of T.V. Sets | 300 | 400 | 150 | 250 | 100 | 350 | 200 |
Represent the above information by a pictograph .
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C.I |
5 -15 | 15 -25 | 25 -35 | 35 - 45 | 45-55 | 55-65 |
| ƒ | 8 | 16 | 18 | 14 | 8 | 2 |
Construct a combined histogram and frequency polygon for the following frequency distribution:
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| Frequency | 3 | 5 | 6 | 4 | 2 |
The daily wages in a factory are distributed as follows:
|
Daily wages (in Rs.) |
125 - 175 |
175 - 225 |
225 - 275 |
275 - 325 |
325 - 375 |
|
Number of workers |
4 |
20 |
22 |
10 |
6 |
Draw a frequency polygon for this distribution.
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| 32 | 16 | 24 | 20 | 8 |
Mr. Mirza’s monthly income is Rs. 7,200. He spends Rs. 1,800 on rent, Rs. 2,700 on food, Rs. 900 on the education of his children; Rs. 1,200 on Other things and saves the rest.
Draw a pie-chart to represent it.
