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प्रश्न
Number of children in six different classes are given below. Represent the data on a bar graph.
| Class | Fifth | Sixth | Seventh | Eighth | Ninth | Tenth |
| Number of children | 135 | 120 | 95 | 100 | 90 | 80 |
- How would you choose a scale?
- Answer the following questions:
- Which class has the maximum number of children? And the minimum?
- Find the ratio of students of class sixth to the students of class eight.
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उत्तर
a. We will choose a scale as 1 unit = 10 children because we can represent a more clear difference between the number of students of class 7th and that of class 9th by this scale.
b. i. Since the bar representing the number of children for class fifth is the tallest, there are maximum number of children in class fifth. Similarly, since the bar representing the number of children for class tenth is the smallest, there are minimum number of children in class tenth.
ii. The number of students in class sixth is 120 and the number of students in class eight is 100. Therefore, the ratio between the number of students of class sixth and the number of students of class eight
= `120/100`
= `6/5`
= 6 : 5
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संबंधित प्रश्न
Read the bar graph (see the given figure) which shows the number of books sold by a bookstore during five consecutive years and answer the questions that follow:
- About how many books were sold in 1989? 1990? 1992?
- In which year were about 475 books sold? About 225 books sold?
- In which years were fewer than 250 books sold?
- Can you explain how you would estimate the number of books sold in 1989?
The performance of students in 1st Term and 2nd Term is given. Draw a double bar graph choosing appropriate scale and answer the following:
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| 1st Term (M.M. 100) | 67 | 72 | 88 | 81 | 73 |
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- Has the performance gone down in any subject?
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The following table shows the number of Buses and Trucks in nearest lakh units. Draw percentage bar-diagram. (Approximate the percentages to the nearest integer)
| Year | No of trucks | No of buses |
| 2005-2006 2007-2008 2008-2009 2009-2010 |
47 56 60 63 |
9 13 16 18 |
The following table shows the number of Buses and Trucks in nearest lakh units. Draw percentage bar-diagram. (Approximate the percentages to the nearest integer)
| Year | No. of Trucks | No. of Buses |
| 2005-2006 | 47 | 9 |
| 2007-2008 | 56 | 13 |
| 2008-2009 | 60 | 16 |
| 2009-2010 | 63 | 18 |
In a bar graph, bars of ______ width can be drawn horizontally or vertically with ______ spacing between them.
The bar graph given below represents the circulation of newspapers (dailies) in a town in six languages (the figures are approximated to hundreds).
Study the bar graph and answer the following questions:
- Find the total number of newspapers read in Hindi, Punjabi, Urdu, Marathi and Tamil.
- Find the excess number of newspapers read in Hindi than those in English.
- Name the language in which the least number of newspapers are read.
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- What information is represented by the above double bar graph?
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- Find the ratio of sales of Brand A as compared to Brand B for the month of January.
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| Days of the week |
Mon | Tues | Wed | Thurs | Fri | Sat |
| Number of Mobile Phone Sets Sold |
50 | 45 | 30 | 55 | 27 | 60 |
- Draw a bar graph to represent the above given information.
- On which day of the week was the sales maximum?
- Find the total sales during the week.
- Find the ratio of the minimum sale to the maximum sale.
- Calculate the average sale during the week.
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Below is a list of 10 tallest buildings in India.
This list ranks buildings in India that stand at least 150 m (492 ft.) tall, based on standard height measurement. This includes spires and architectural details but does not include antenna marks. Following data is given as per the available information till 2009. Since new buildings are always under construction, go on-line to check new taller buildings.
Use the information given in the table about sky scrapers to answer the following questions:
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| Planet | Mumbai | 181 m | 51 | 2009 |
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| The Imperial II | Mumbai | 249 m | 60 | 2009 |
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| Oberoi Woods Tower II | Mumbai | 170 m | 40 | 2009 |
| Oberoi Woods Tower III | Mumbai | 170 m | 40 | 2009 |
| MVRDC | Mumbai | 156 m | 35 | 2002 |
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