हिंदी

Study the double bar graph shown below and answer the questions that follow: What information is represented by the above double bar graph?

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प्रश्न

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

  1. What information is represented by the above double bar graph?
  2. In which month sales of Brand A decreased as compared to the previous month?
  3. What is the difference in sales of both the Brands for the month of June?
  4. Find the average sales of Brand B for the six months.
  5. List all months for which the sales of Brand B was less than that of Brand A.
  6. Find the ratio of sales of Brand A as compared to Brand B for the month of January.
आलेख
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उत्तर

a. The above double bar graph compares the sale of brands A and B during the months of January to June.

b. We can clearly see from the double bar graph that sales for brand A reduced in the month of March compared to that of February.

c. Sales of brand A in June = 157 lakh and sales of brand B in June = Rs. 54 lakh

Difference in sales = 57 – 54 = Rs. 3 lakh

d. Average sales of brand B

= `"Total sales of brand B in six months from January to June"/6`

= `(36 + 38 + 43 + 35 + 45 + 54)/6`

= `251/6`

= ₹ 41.83 lakh

e. We can clearly see from the double bar graph that sales of brand B is less than sales of brand A in the month of April and June.

f. Sales of brand A in January = 31 and sales of brand B in January = 36

∴ Required ratio = `31/36` or 31: 366

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अध्याय 3: Data Handling - Exercise [पृष्ठ ८५]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 3 Data Handling
Exercise | Q 78. | पृष्ठ ८५

संबंधित प्रश्न

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
2006-2007 47 9
2007-2008 56 13
2008-2009 60 16
2009-2010 63 18

Comparison of parts of a whole may be done by a ______.


The graph given below gives the actual and expected sales of cars of a company for 6 months. Study the graph and answer the questions that follow.

  1. In which month was the actual sales same as the expected sales?
  2. For which month(s) was (were) the difference in actual and expected sales the maximum?
  3. For which month(s) was (were) the difference in actual and expected sales the least?
  4. What was the total sales of cars in the months–Jan, Feb. and March?
  5. What is the average sales of cars in the last three months?
  6. Find the ratio of sales in the first three months to the last three months

The following graph gives the information about the number of railway tickets sold for different cities on a railway ticket counter between 6.00 am to 10.00 am.

Read the bar graph and answer the following questions.

Scale: 1 unit length = 10 tickets

  1. How many tickets were sold in all?
  2. For which city were the maximum number of tickets sold?
  3. For which city were the minimum number of tickets sold?
  4. Name the cities for which the number of tickets sold is more than 20
  5. Fill in the blanks:
    Number of tickets sold for Delhi and Jaipur together exceeds the total number of tickets sold for Patna and Chennai by ______.

Scale: 1 unit length = 200 km

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


The representation of data with bars of uniform width is called ______.


Study the double bar graphs given below and answer the following questions:

  1. Which sport is liked the most by Class VIII students?
  2. How many students of Class VII like Hockey and Tennis in all?
  3. How many students are there in Class VII?
  4. For which sport is the number of students of Class VII less than that of Class VIII?
  5. For how many sports students of Class VIII are less than Class VII?
  6. Find the ratio of students who like Badminton in Class VII to students who like Tennis in Class VIII.

Observe the following data:

Government School, Chandpur
Daily Attendance   Date: 15.4.2009
Class Total Students Number of Students
Present on that Day
VI 90 81
VII 82 76
VIII 95 91
IX 70 65
X 63 62
  1. Draw a double bar graph choosing an appropriate scale. What do you infer from the bar graph?
  2. Which class has the maximum number of students?
  3. In which class, the difference of total students and number of students present is minimum?
  4. Find the ratio of number of students present to the total number of students of Class IX.
  5. What per cent of Class VI students were absent?

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.


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