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All questions of Demography for Primary 6 Exam

The colours of fridges preferred by people living in a locality are shown by the following pictograph. Find the number of people preferring green colour.
  • a)
    20
  • b)
    30
  • c)
    40
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

In the pictograph, 1 image equals 10 people. 
The colour green has 3 such images representing it. 
Therefore, the number of people preferring green colour are 3 x 10 = 30 

The following pictograph shows the number of absentees in a class of 30 students during the previous week. On which day were the maximum number of students absent?
  • a)
    Wednesday
  • b)
    Friday
  • c)
    Saturday
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

Anita Menon answered
In the pictograph, 1 image equals 1 Absentee. 
On Saturday there are 8 such images, which is higher than all the other days in the week. 
Therefore, on Saturday the maximum number of students were absent.

The width or size of the class interval 30-40 is:
  • a)
    10
  • b)
    30
  • c)
    40
  • d)
    70
Correct answer is option 'A'. Can you explain this answer?

Pranjal Gupta answered
Explanation:

Class interval is the range of data values that are included in a class. In this case, the class interval is 30-40.

Formula: Width of class interval = Upper limit - Lower limit

Therefore, width of class interval = 40 - 30 = 10

Hence, the correct answer is option 'A' which states that the width of the class interval 30-40 is 10.

The colours of fridges preferred by people living in a locality are shown by the following pictograph. How many people liked red colour?
  • a)
    90
  • b)
    110
  • c)
    100
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Freak Artworks answered
In the pictograph, 1 image equals 10 people. 
The colour red has 11 such images representing it. 
Therefore, the number of people preferring green colour are 11 x 10 = 110

The choices of the sweets of 10 students in a batch are as follows: 
Jalebi, Kaju Katli, Kalakand, Kaju Katli, Kheer, Barfi,
Rasgulla, Kaju Katli, Kheer, Kaju Katli
Q. The sweet preferred by the most of the students is
  • a)
    Jalebi
  • b)
    Rasgulla
  • c)
    Kaju Katli
  • d)
    Kheer
Correct answer is option 'C'. Can you explain this answer?

Tanishq Khanna answered
Understanding the Choices of Sweets
In this scenario, we have the sweet preferences of 10 students. Let's examine the choices closely to determine which sweet was preferred the most.
List of Sweets Chosen
- Jalebi
- Kaju Katli
- Kalakand
- Kaju Katli
- Kheer
- Barfi
- Rasgulla
- Kaju Katli
- Kheer
- Kaju Katli
Counting the Preferences
Now, let’s tally the number of times each sweet was chosen:
- Jalebi: 1 time
- Kaju Katli: 4 times
- Kalakand: 1 time
- Kheer: 2 times
- Barfi: 1 time
- Rasgulla: 1 time
Identifying the Most Popular Sweet
From the counts, we can see:
- Kaju Katli was chosen 4 times, which is the most compared to the others.
- Kheer was chosen 2 times.
- All other sweets were chosen only once.
Conclusion
The sweet preferred by the most students is clearly Kaju Katli, with a total of 4 votes. Therefore, the correct answer is option C: Kaju Katli. This indicates a strong preference for Kaju Katli among the students in this batch.

The colours of fridges preferred by people living in a locality are shown by the following pictograph. Find the number of people preferring blue colour.
  • a)
    40
  • b)
    30
  • c)
    50
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

In the pictograph, 1 image equals 10 people. 
The colour blue has 3 such images representing it. 
Therefore, the number of people preferring blue colour are 5 x 10 = 50

A ________ represents data through pictures of objects.
  • a)
    histogram
  • b)
    pictograph
  • c)
    bar graph
  • d)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Pictograph is a graph that shows numerical information by using picture symbols or icon s to represent data sets. The advantage of using a pictograph is that it is easy to read.

Direction: Observe the adjoining bar graph, showing the number of one-day international matches played by cricket teams of different countries.

Q. Which country played maximum number of matches?
  • a)
    Australia
  • b)
    Pakistan
  • c)
    England
  • d)
    India
Correct answer is option 'A'. Can you explain this answer?

Coachify answered
To determine which country played the maximum number of one-day international matches, we analyze the given bar graph carefully. The graph shows the number of matches played by each country's cricket team:
  • India: 30 matches
  • Pakistan: 24 matches
  • West Indies: 18 matches
  • England: 30 matches
  • South Africa: 12 matches
  • Australia: 32 matches
  • Sri Lanka: 24 matches
From the data, it is evident that Australia has played the highest number of matches, which is 32.
Answer: Australia

Direction: Observe the adjoining bar graph, showing the number of one-day international matches played by cricket teams of different countries.

Q. How many more matches were played by India than Pakistan? IF India Played 30 and Pkaistan played 24
  • a)
    6
  • b)
    12
  • c)
    24
  • d)
    30
Correct answer is option 'A'. Can you explain this answer?

Get Idea answered
The number of more matches played by India than Pakistan = Number of matches played by India - Number of matches played by Pakistan
⇒ The number of more matches played by India than Pakistan = 30 - 24
⇒ The number of more matches played by India than Pakistan = 6 matches
Hence, India played 6 matches more than Pakistan.
Hence, the correct option is A.

The ________ of each vertical bar gives the required information.
  • a)
    breadth
  • b)
    height
  • c)
    length
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

EduRev CAT answered
In a horizontal bar graph, the length of each bar represents the value or magnitude being measured.
Therefore, the correct answer is:
  • Length

Direction: Observe the adjoining bar graph, showing the number of one-day international matches played by cricket teams of different countries.

Q. Ratio of the number of matches played by India to the number of matches played by Sri Lanka is
  • a)
    5 : 4
  • b)
    4 : 3
  • c)
    7 : 6 
  • d)
    4 : 5
Correct answer is option 'A'. Can you explain this answer?

Get Idea answered
From the bar graph, the number of matches played by India is 30, and the number of matches played by Sri Lanka is 24.
Ratio of matches played by India to Sri Lanka = 30 : 24.
Simplifying this ratio by dividing both terms by 6, we get 5 : 4.
Therefore, the correct ratio is 5 : 4.

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