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Question (21)

QN0030768

Which graph is most suitable for comparing the number of boys and girls participating in different sports?

(A) Dot plot
(B) Double bar graph
(C) Line graph
(D) Pie chart

Correct Answer: B

Explanation:

A double bar graph is used to compare two related data sets.

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Question (22)

QN0030769

A bar graph uses the scale 1 unit = ₹25. If a bar represents ₹300, its height is

(A) 10 units
(B) 11 units
(C) 12 units
(D) 13 units

Correct Answer: C

Explanation:

Height = 300 ÷ 25 = 12 units.

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Question (23)

QN0030770

If the bars representing two categories are of equal height, it indicates that

(A) both values are equal
(B) both values are zero
(C) the graph is incorrect
(D) the scale is wrong

Correct Answer: A

Explanation:

Equal bar heights represent equal values.

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Question (24)

QN0030771

A graph uses the scale 1 division = 8 students. A bar is 15 divisions high. How many students does it represent?

(A) 112
(B) 118
(C) 120
(D) 124

Correct Answer: C

Explanation:

Number of students = 15 × 8 = 120.

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Question (25)

QN0030772

Which of the following helps avoid confusion while reading a double bar graph?

(A) Different colours or shading for the two data sets
(B) Unequal bar widths
(C) Different scales for different bars
(D) Missing labels

Correct Answer: A

Explanation:

Different colours or patterns distinguish the two data sets.

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Question (26)

QN0030773

A graph has the scale 1 unit = 40 kg. If a bar represents 360 kg, how many units high is it?

(A) 7
(B) 8
(C) 9
(D) 10

Correct Answer: C

Explanation:

Height = 360 ÷ 40 = 9 units.

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Question (27)

QN0030774

The main purpose of visualising data is to

(A) increase the amount of data
(B) make data easier to understand and compare
(C) reduce the number of observations
(D) replace calculations completely

Correct Answer: B

Explanation:

Visual representations help compare and interpret data easily.

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Question (28)

QN0030775

A bar graph uses the scale 1 division = 12 plants. If one bar is 7 divisions high and another is 10 divisions high, what is the difference between the two quantities?

(A) 24 plants
(B) 30 plants
(C) 36 plants
(D) 42 plants

Correct Answer: C

Explanation:

Difference = (10 − 7) × 12 = 36 plants.

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Question (29)

QN0030776

While drawing a clustered bar graph, the bars representing the same category should be

(A) drawn one above another
(B) placed side by side
(C) of different widths
(D) separated by unequal gaps

Correct Answer: B

Explanation:

Bars for the same category are placed side by side for comparison.

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Question (30)

QN0030777

A graph uses the scale 1 unit = 50 passengers. If a bar is 14 units high, the number of passengers represented is

(A) 650
(B) 700
(C) 750
(D) 800

Correct Answer: B

Explanation:

Number of passengers = 14 × 50 = 700.

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Question (21)

Which graph is most suitable for comparing the number of boys and girls participating in different sports?

Explanation:

Link:

Question (22)

A bar graph uses the scale 1 unit = ₹25. If a bar represents ₹300, its height is

Explanation:

Link:

Question (23)

If the bars representing two categories are of equal height, it indicates that

Explanation:

Link:

Question (24)

A graph uses the scale 1 division = 8 students. A bar is 15 divisions high. How many students does it represent?

Explanation:

Link:

Question (25)

Which of the following helps avoid confusion while reading a double bar graph?

Explanation:

Link:

Question (26)

A graph has the scale 1 unit = 40 kg. If a bar represents 360 kg, how many units high is it?

Explanation:

Link:

Question (27)

The main purpose of visualising data is to

Explanation:

Link:

Question (28)

A bar graph uses the scale 1 division = 12 plants. If one bar is 7 divisions high and another is 10 divisions high, what is the difference between the two quantities?

Explanation:

Link:

Question (29)

While drawing a clustered bar graph, the bars representing the same category should be

Explanation:

Link:

Question (30)

A graph uses the scale 1 unit = 50 passengers. If a bar is 14 units high, the number of passengers represented is

Explanation:

Link:

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