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Olympiad Test: Data Handling - 1


15 Questions MCQ Test Mathematics Olympiad Class 7 | Olympiad Test: Data Handling - 1


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Attempt Olympiad Test: Data Handling - 1 | 15 questions in 30 minutes | Mock test for Class 7 preparation | Free important questions MCQ to study Mathematics Olympiad Class 7 for Class 7 Exam | Download free PDF with solutions
QUESTION: 1

What is the mean of the following numbers
7.6, 6.8, 8.5, 9.4, 5.9, 6.4, 9.1, 4.7? 

Solution:

Mean

QUESTION: 2

What is the mean of first nine even natural numbers?

Solution:

QUESTION: 3

What is the mean of first seven prime numbers?

Solution:

QUESTION: 4

What is the mean of first eight odd natural numbers?
Solution:

QUESTION: 5

The runs scored by 11 members of a cricket team are 35, 39, 53, 28, 65, 62, 0, 46, 31, 08, 24. What is the median score?
Solution:

The runs scored in ascending order are 0, 08, 24, 28, 31, 35, 39, 46, 53, 62, 65.
n = 11, which is odd.

QUESTION: 6

What is the median of first 15 odd numbers?
Solution:

First 15 odd numbers are 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31.
n = 15, which is odd.

QUESTION: 7

What is the median of first 50 whole numbers?
Solution:

n = 50, which is even.

QUESTION: 8

What is the median of 21, 15, 8, 28, 19, 23, 40, 7, 16, 9, 22 ?
Solution:

The numbers in the ascending order are 7, 8, 9, 15, 16, 19, 21, 22, 23, 28, 40
n = 11, which is odd.

QUESTION: 9

What is the mode of the following data 22, 28, 47, 43, 28, 27, 36, 43, 45, 42, 43, 46, ?
Solution:

As 28 appears two times, but other numbers appear only once. 

QUESTION: 10

If the mean of a given data is 51kg and its median is 50 kg, what is the mode of that data?​
Solution:

Mode = 3 Median – 2 Mean
= 3 (51) – 2 (50)
= 153 – 100
= 53 kg 

QUESTION: 11

If the mode of the given data is 22.16, its median is 22. What is its mean?
Solution:

Mode = 22.16
Median = 22
Mode = 3 Median – 2 Mean
22.16 = 3 × 22 – 2 Mean
2 Mean = 66 – 22.16 = 43.84

QUESTION: 12

What is the mean of first 12 multiples of 7?
Solution:

QUESTION: 13

What is the median of the given data?
Solution:


N = 37 
N = 37, which is odd.

QUESTION: 14

What is the mean of the given data?
Solution:



QUESTION: 15

What is the median of first 9 multiples of 12?
Solution:

First 9 multiples of 12 are 12, 24, 36, 48, 60, 72, 84, 96, 108
n = 9

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