Statistics Test

Result

Statistics Test - 2

Score
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out of -
Rank
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TIME Taken - -

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Question 1
1 / -0

Directions For Questions

Answer the question based on the following data.

The marks obtained by 20 students of a class in a mathematics test are as follows:

45 35 60 32 31 52 31 45 39 55

60 52 38 45 31 32 45 62 52 35

...view full instructions

What is the frequency of students who obtained the lowest marks?

A
3

B
5

C
2

D
31

Solution

The lowest marks are 31 that occur 3 times in the given data.
Therefore, the frequency of the students who obtained the lowest marks is 3.
Question 2
1 / -0

Directions For Questions

Answer the question based on the following data.

The marks obtained by 20 students of a class in a mathematics test are as follows:

45 35 60 32 31 52 31 45 39 55

60 52 38 45 31 32 45 62 52 35

...view full instructions

What is the range of the marks obtained by students?

A
45.0

B
31.0

C
46.5

D
15.5

Solution

Range of the marks obtained by students
= highest marks – lowest marks
= 62 – 31 = 31
Question 3
1 / -0

Directions For Questions

Answer the question based on the following data.

The marks obtained by 20 students of a class in a mathematics test are as follows:

45 35 60 32 31 52 31 45 39 55

60 52 38 45 31 32 45 62 52 35

...view full instructions

The marks obtained by the maximum number of students are

A
62

B
31

C
45

D
38

Solution

Four students obtain 45 marks.
So, the marks obtained by the greatest number of students are 45.

Question 4

1 / -0

Directions For Questions

Answer the question based on the given table.

Age Group	Frequency	Cumulative Frequency
3 – 5	2
5 – 7	4
7 – 9	3
9 – 11	1	X
11 – 13	2	Y
13 – 15	6

...view full instructions

What will be the value of X?

9

10

3

4 Solution

X = Cumulative frequency of age group (9 – 11) = 2 + 4 + 3 + 1 = 10

(∵ Cumulative frequency of a class interval is obtained by adding all the frequencies up to that class interval.)