Chapter 15 · Class 8 CBSE · MCQ Test
Data Handling MCQ Test — Class 8 CBSE
Practice 10 multiple-choice questions with instant answer reveal and explanations.
Data Handling — MCQ Questions
1What is the range of the data set: 12, 18, 7, 25, 14?
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Answer: 18
Hint: Range = Maximum value − Minimum value.
Solution:
The maximum value is 25 and the minimum value is 7.
Range: — 25 − 7 = 18
2In a frequency distribution table, the frequency of a class interval represents:
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Answer: The number of observations in that class
Hint: Frequency means how many times something occurs.
Solution:
Frequency is the count of observations that fall within a particular class interval.
3A coin is tossed once. What is the probability of getting a head?
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Answer: 1/2
Hint: A coin has two equally likely outcomes.
Solution:
Total outcomes = 2 (Head, Tail).
Favourable outcomes for Head = 1.
Probability: — P(Head) = 1/2
4Which of the following is used to represent data using rectangular bars of equal width?
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Answer: Bar graph
Hint: Think of vertical or horizontal rectangular bars.
Solution:
A bar graph uses rectangular bars of equal width to represent data.
The height (or length) of each bar represents the value or frequency.
5A die is thrown once. How many possible outcomes are there?
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Answer: 6
Hint: Count the faces of a standard die.
Solution:
A standard die has 6 faces numbered 1 to 6.
Each face is equally likely, so there are 6 possible outcomes.
6In a pie chart, the total angle at the centre is:
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Answer: 360°
Hint: A pie chart is a full circle.
Solution:
A pie chart is a circle, and a full circle subtends 360° at the centre.
7The class mark (midpoint) of the class interval 10–20 is:
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Answer: 15
Hint: Class mark = (Lower limit + Upper limit) / 2.
Solution:
Class mark: — (10 + 20) / 2 = 30 / 2 = 15
8A histogram is different from a bar graph because in a histogram:
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Answer: There are no gaps between bars
Hint: Histograms represent continuous data.
Solution:
In a histogram, bars are drawn adjacent to each other (no gaps) because the data is continuous.
In a bar graph, bars have gaps between them as the data is categorical.
9What is the probability of an impossible event?
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Answer: 0
Hint: If an event can never happen, what should its probability be?
Solution:
An impossible event has no favourable outcomes.
Probability: — P(impossible event) = 0/total = 0
10What is the probability of a sure (certain) event?
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Answer: 1
Hint: If something will definitely happen, what is the probability?
Solution:
A certain event always happens, so all outcomes are favourable.
Probability: — P(certain event) = total/total = 1
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Tips for Data Handling MCQs
- 1Read each question carefully and identify what is being asked before looking at the options.
- 2Try to solve the problem mentally or on paper first, then match your answer with the options.
- 3Use elimination — rule out clearly wrong options to improve your chances even when unsure.
- 4Check units, signs, and edge cases — these are common traps in Data Handling MCQs.
- 5Review your mistakes after completing the test to build lasting understanding.
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