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

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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

Take the data giving the minimum and the maximum temperature of various cities given in the following table:

Temperatures of the cities as on 20.6.2006
City Max. Min.
Ahmedabad 38ºC 29ºC
Amritsar 37ºC 26ºC
Banglore 28ºC 21ºC
Chennai 36ºC 27ºC
Delhi 38ºC 28ºC
Jaipur 39ºC 29ºC
Jammu 41ºC 26ºC
Mumbai 32ºC 27ºC

Plot a double bar graph using the data and answer the following:

  1. Which city has the largest difference in the minimum and maximum temperature on the given date?
  2. Which is the hottest city and which is the coldest city?
  3. Name two cities where maximum temperature of one was less than the minimum temperature of the other.
  4. Name the city which has the least difference between its minimum and the maximum temperature.

Bar diagram of first term scores of a student are given.

a. The highest score is in _________.

b. The lowest score is in _________.

c. The same scores are in _________ and _________.


In a bar graph, the width of bars may be unequal.


In a bar graph, ______ can be drawn horizontally or vertically.


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

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1 – 20 25000
21 – 40 40000
41 – 50 35000
61 – 80 10000

Draw a bar graph to represent the above information.


The bar graph given below shows the marks of students of a class in a particular subject:

Study the bar graph and answer the following questions:

  1. If 40 is the pass mark, then how many students have failed?
  2. How many students got marks from 50 to 69?
  3. How many students scored 90 marks and above?
  4. If students who scored marks above 80 are given merits then how many merit holders are there?
  5. What is the strength of the class?

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

  1. What information is depicted from the bar graph?
  2. In which subject is the student very good?
  3. Calculate the average marks of the student.
  4. If 75 and above marks denote a distinction, then name the subjects in which the student got distinction.
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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.
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The table below gives the data of tourists visiting 5 hill stations over two consecutive years. Study the table and answer the questions that follow:

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2008 4000 5200 3700 5800 3500
2009 4800 4500 4200 6200 4600
  1. Draw a double bar graph to depict the above information using appropriate scale.
  2. Which hill station was visited by the maximum number of tourists in 2008?
  3. Which hill station was visited by the least number of tourists in 2009?
  4. In which hill stations was there increase in number of tourists in the year 2009?

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