मराठी

Study the double bar graph and answer the questions that follow: What information does the double bar graph represent? Find the total number of boys in all sections of Class VII. In which sections

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प्रश्न

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

  1. What information does the double bar graph represent?
  2. Find the total number of boys in all sections of Class VII.
  3. In which sections, the number of girls is greater than the number of boys?
  4. In which section, the number of boys is the maximum?
  5. In which section, the number of girls is the least?
आलेख
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उत्तर

  1. The above graphs show the number of students (boys and girls) in different sections of class VII.
  2. It is clear from the graph, total number of boys in all sections of class VII = Sum of heights of all the bars corresponding to boys in different sections = 15 + 30 + 20 + 20 + 25 = 110
  3. It is clear from the graph that in sections VII A and VII D, the number of girls are greater than the number of boys.
  4. From the graph, it is clear that in section VII B, number of boys is maximum.
  5. From the graph, it is clear that in section VII C, number of girls is minimum.
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पाठ 3: Data Handling - Exercise [पृष्ठ ८७]

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एनसीईआरटी एक्झांप्लर Mathematics Exemplar Class 7
पाठ 3 Data Handling
Exercise | Q 81. | पृष्ठ ८७

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

In the table given below, the information is given about roads. Using this draw a sub-divided and percentage bar diagram (Approximate the percentages to the nearest integer).

Year    Permanent Roads 
      ( Lakh km.)
  Temporary Roads 
      ( Lakh km.)
2000-2001 14 10
2001-2002 15 11
2002-2003 17 13
2003-2004 20 19

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


The following bar graph shows the number of houses (out of 100) in a town using different types of fuels for cooking.

Read the bar graph and answer the following questions:

Scale: 1 unit length = 5 houses

  1. Which fuel is used in maximum number of houses?
  2. How many houses are using coal as fuel?
  3. Suppose that the total number of houses in the town is 1 lakh.
    From the above graph estimate the number of houses using electricity.

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.


Crop Area of land
(in million hectares)
Rice 50
Wheat 30
Pulses 20
Sugarcane 25
Cotton 15

Prepare a bar graph of the data.


______ can be used to compare two collections of data.


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


Observe the given data:

Days of
the week
Mon Tues Wed Thurs Fri Sat
Number of
Mobile Phone
Sets Sold
50 45 30 55 27 60
  1. Draw a bar graph to represent the above given information.
  2. On which day of the week was the sales maximum?
  3. Find the total sales during the week.
  4. Find the ratio of the minimum sale to the maximum sale.
  5. Calculate the average sale during the week.
  6. On how many days of the week was the sale above the average sales?

The table below gives the flavours of ice cream liked by children (boys and girls) of a society.

Flavours Vanilla Chocolate Strawberry Mango Butterscotch
Boys 4 9 3 8 13
Girls 8 12 7 9 10

Study the table and answer the following questions:

  1. Draw a double bar graph using appropriate scale to represent the above information.
  2. Which flavour is liked the most by the boys?
  3. How many girls are there in all?
  4. How many children like chocolate flavour of ice cream?
  5. Find the ratio of children who like strawberry flavour to vanilla flavour of ice cream.

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