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

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प्रश्न

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

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उत्तर

The representation of data with bars of uniform width is called bar graph.

Explanation:

The representation of the data in the form of rectangles (bars) of uniform width is called a bar graph.

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अध्याय 3: Data Handling - Exercise [पृष्ठ ७४]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 3 Data Handling
Exercise | Q 27. | पृष्ठ ७४

संबंधित प्रश्न

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

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 graph given below shows the marks obtained out of 10 by Sonia in two different tests. Study the graph and answer the questions that follow.

  1. What information is represented by the axes?
  2. In which subject did she score the highest in Test I?
  3. In which subject did she score the least in Test II?
  4. In which subject did she score the same marks in both the Tests?
  5. What are the marks scored by her in English in Test II?
  6. In which test was the performance better?
  7. In which subject and which test did she score full marks?

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


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 ______.

The lengths in km (rounded to nearest hundred) of some major rivers of India is given below:

River Length (in km)
Narmada 1300
Mahanadi 900
Brahmputra 2900
Ganga 2500
Kaveri 800
Krishna 1300

Draw a bar graph to represent the above information.


Scale: 1 unit length = 200 km

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


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

Prepare a bar graph of the data.


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:

  1. Find the total number of newspapers read in Hindi, Punjabi, Urdu, Marathi and Tamil.
  2. Find the excess number of newspapers read in Hindi than those in English.
  3. Name the language in which the least number of newspapers are read.
  4. Write the total circulation of newspapers in the town.

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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