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The performance of students in 1st Term and 2nd Term is given. Draw a double bar graph choosing appropriate scale and answer the following: Subject English Hindi Maths Science S. science - Mathematics

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प्रश्न

The performance of students in 1st Term and 2nd Term is given. Draw a double bar graph choosing appropriate scale and answer the following:

Subject English Hindi Maths Science S. science
1st Term (M.M. 100) 67 72 88 81 73
2nd Term (M.M. 100) 70 65 95 85 75
  1. In which subject, has the child improved his performance the most?
  2. In which subject is the improvement the least?
  3. Has the performance gone down in any subject?
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उत्तर

A double bar graph for the given data is as follows.

  1. There was a maximum increase in the marks obtained in Maths. Therefore, the child has improved his performance the most in Maths.
  2. From the graph, it can be concluded that the improvement was the least in S. Science.
  3. From the graph, it can be observed that the performance in Hindi has gone down.
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  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Data Handling - EXERCISE 3.3 [पृष्ठ ५७]

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एनसीईआरटी Mathematics [English] Class 7
अध्याय 3 Data Handling
EXERCISE 3.3 | Q 4. | पृष्ठ ५७

संबंधित 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
  1. How would you choose a scale?
  2. Answer the following questions:
    1. Which class has the maximum number of children? And the minimum?
    2. Find the ratio of students of class sixth to the students of class eight.

The following chart gives the growth in height in terms of percentage of full height of boys and girls with their respective ages.

Age (in years) 8 9 10 11 12 13 14 15 16 17

18

Boys 72% 75% 78% 81% 84% 88% 92% 95% 98% 99% 100%
Girls 77% 81% 84% 88% 91% 95% 98% 99% 99.5% 100% 100%

Draw the line graph of above data on the same sheet and answer the following questions.

  1. In which year both the boys and the girls achieve their maximum height?
  2. Who grows faster at puberty (14 years to 16 years of age)?

In a bar graph, each bar (rectangle) represents only one value of the numerical data.


Number of mobile phone users in various age groups in a city is listed below:

Age group (in years) Number of mobile users
1 – 20 25000
21 – 40 40000
41 – 50 35000
61 – 80 10000

Draw a bar graph to represent the above information.


The following table gives the number of vehicles passing through a toll gate, every hour from 8.00 am. to 1.00 pm:

Time
Interval
8.00
to
9.00
9.00
to
10.00
10.00
to
11.00
11.00
to
12.00
12.00
to
1.00
Number
of vehicles
250 450 300 250 150

Draw a bar graph representing the above data.


Scale: 1 unit length = 200 km

Prepare a pictograph of the data by taking a suitable symbol to represent 200 kilometers.


Study the bar graph given below and answer the questions that follow.

  1. What information does the above bar graph represent?
  2. In which year was production the least?
  3. After which year was the maximum rise in the production?
  4. Find the average production of rice during the 5 years.
  5. Find difference of rice production between years 2006 and 2008.

Study the double bar graph given below and answer the questions that follow:

  1. What information is compared in the above given double bar graph?
  2. Calculate the ratio of minimum temperatures in the year 2008 to the year 2009 for the month of November.
  3. For how many months was the minimum temperature in the year 2008 greater than that of year 2009? Name those months.
  4. Find the average minimum temperature for the year 2008 for the four months.
  5. In which month is the variation in the two temperatures maximum?

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:

Name City Height Floors Year
Planet Mumbai 181 m 51 2009
UB Tower Bengaluru 184 m 20 2006
Ashok Towers Mumbai 193 m 49 2009
The Imperial I Mumbai 249 m 60 2009
The Imperial II Mumbai 249 m 60 2009
RNA Mirage Mumbai 180 m 40 2009
Oberoi Woods Tower I Mumbai 170 m 40 2009
Oberoi Woods Tower II Mumbai 170 m 40 2009
Oberoi Woods Tower III Mumbai 170 m 40 2009
MVRDC Mumbai 156 m 35 2002

(a) Find the height of each storey of the three tallest buildings and write them in the following table:

Building Height Number of storeys Height of each storey
       
       
       

(b) The average height of one storey for the buildings given in (a) is ______.

(c) Which city in this list has the largest percentage of skyscrapers? What is the percentage?

(d) What is the range of data?

(e) Find the median of the data.

(f) Draw a bar graph for given data.


The data given below shows the production of motorbikes in a factory for some months of two consecutive years.

Months Feb May August October December
2008 2700 3200 6000 5000 4200
2007 2800 4500 4800 4800 5200

Study the table given above and answer the following questions:

  1. Draw a double bar graph using appropriate scale to depict the above information and compare them.
  2. In which year was the total output the maximum?
  3. Find the mean production for the year 2007.
  4. For which month was the difference between the production for the two years the maximum?
  5. In which month for the year 2008, the production was the maximum?
  6. In which month for the year 2007, the production was the least?

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