NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 3: Data HandlingMultiple Choice Questions
Class 7 - Mathematics - Unit 3: Data Handling
Question. 1
Let x, y, z be three observations. The mean of these observations is
\(\dfrac{x \times y \times z}{3}\)
\(\dfrac{x+y+z}{3}\)
\(\dfrac{x-y-z}{3}\)
\(\dfrac{x \times y + z}{3}\)
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Question. 2
The number of trees in different parks of a city are 33, 38, 48, 33, 34, 34, 33 and 24. The mode of this data is
24
34
33
48
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Question. 3
Which measures of central tendency get affected if the extreme observations on both the ends of a data arranged in descending order are removed?
Mean and mode
Mean and Median
Mode and Median
Mean, Median and Mode
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Question. 4
The range of the data: 21, 6, 17, 18, 12, 8, 4, 13 is
17
12
8
15
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Question. 5
The median of the data: 3, 4, 5, 6, 7, 3, 4 is
5
3
4
6
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Question. 6
Out of 5 brands of chocolates in a shop, a boy has to purchase the brand which is most liked by children. What measure of central tendency would be most appropriate if the data is provided to him?
Mean
Mode
Median
Any of the three
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Question. 7
There are 2 aces in each of the given set of cards placed face down. From which set are you certain to pick the two aces in the first go?
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Question. 8
In the previous question, what is the probability of picking up an ace from set (d)?
\(\dfrac{1}{6}\)
\(\dfrac{2}{6}\)
\(\dfrac{3}{6}\)
\(\dfrac{4}{6}\)
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Question. 9
The difference between the highest and the lowest observations in a data is its
frequency
width
range
mode
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Question. 10
In a school, only 2 out of 5 students can participate in a quiz. What is the chance that a student picked at random makes it to the competition?
20%
40%
50%
30%
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Question. 11
Some integers are marked on a board. What is the range of these integers?
31
37
20
3
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Question. 12
On tossing a coin, the outcome is
only head
only tail
neither head nor tail
either head or tail
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Question. 13
The mean of three numbers is 40. All the three numbers are different natural numbers. If lowest is 19, what could be highest possible number of remaining two numbers?
81
40
100
71
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Question. 14
Khilona earned scores of 97, 73 and 88 respectively in her first three examinations. If she scored 80 in the fourth examination, then her average score will be
increased by 1
increased by 1.5
decreased by 1
decreased by 1.5
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Question. 15
Which measure of central tendency best represents the data of the most popular politician after a debate?
Mean
Median
Mode
Any of the above
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Question. 16
Which of the following has the same mean, median and mode?
(a) 6, 2, 5, 4, 3, 4, 1
(b) 4, 2, 2, 1, 3, 2, 3
(c) 2, 3, 7, 3, 8, 3, 2
(d) 4, 3, 4, 3, 4, 6, 4