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CBSE Class 10 Mathematics Worksheet

UNIT VII: Statistics and probability - Statistics

1.
Choose the correct option: If mode = 50 and mean = 65, then the median is ________.
A) 50 B) 55 C) 45 D) 60
2.

A man can hit a target once in 4 shots. If he fires 4 shots in succession, what is the probability that he will hit his target?

A)

1

 B)

1/256

 C)

81/256

 D)

175/256
3.

If events A and B are independent, it means

A)

P(A∩B)=P(A/B).P(B)

 B)

P(A∩B)= P(B/A).P(B)

 C)

P(A∩B)=P(A)+P(B)

 D)

P(A∩B)=P(A).P(B)
4.

When none of the outcomes is favourable to the event, then the event is said to be

A)

Certain

 B)

Sample

 C)

Impossible

 D)

None of the above
5.

Calculate the mode of the following frequency distribution table:

6.

Three coins are tossd. Find the probability of getting exactly two heads?

A)

3/8

 B)

1/8

 C)

5/8

 D)

7/8
7.

If p (A/B)= p (A), then 

A)

B is dependent of A 

 B)

B is independent of A

 C)

A is independent of B

 D)

Both (b) and (c)
8.

Three identical dice are rolled. What is the probability that the same number will appears on each of them?

A)

1/6

 B)

1/36

 C)

1/18

 D)

3/28
9.
State True/False: Mode is the frequently occurring observation.
A) true B) false
10.

The distribution below shows the number of wickets taken by bowlers in one-day cricket matches:

Find the mean number of wickets?

A)

126.32

B)

132.55

C)

128.75

D)

139.25
11.

If P (A∩B)=0, then the two events A and B are

A)

Mutually exclusive

 B)

Equally likely

 C)

Exhaustive

 D)

Independent
12.

If a pair of dice is thrown, find the probability that the sum is neither 8 nor 10.

A)

5/9

 B)

7/9

 C)

8/9

 D)

2/9
13.
Choose the correct option: The curve drawn by taking upper limits along x-axis and cumulative frequency along y-axis is ________.
A) frequency polygon B) histogram C) less than ogive D) more than ogive
14.

Find  the median from the following data:

 

A)

1128.6

B)

130.4

 C)

132.5

 D)

135.8
15.

There are 10 men in a row in which A and B stand in a row, what is the probability that there will be exactly 3 men between A and B?

A)

1/15

 B)

2/15

 C)

4/15

 D)

7/15
16.

In an organization, the following table represents the number of years of experiences of employees:

Find the mean of number of years of experience?

A)

7.33

 B)

5.33

C)

6.67

D)

7.25
17.

All possible outcomes of a random experiment forms the  

A)

Sample space 

 B)

Events 

 C)

Both (a) and (b)

 D)

None of these 
18.

Find the mode of the following data?

A)

32.3

B)

34.7

 C)

36.5

 D)

38.8
19.

What is the probability that a leap year, selected at random will contain 53 Thursdays or 53 Fridays?

A)

5/7

 B)

3/7

 C)

2/7

 D)

1/7
20.

Find the median for the following frequency distribution?

CBSE Class 10 Mathematics Worksheet

UNIT VII: Statistics and probability - Statistics

Answers

1.
Option D
2.
Option D
3.
Option D
4.
Option C

5.

49.7

6.
Option A
7.
Option D
8.
Option B
9.
Option A
10.
Option D
11.
Option A
12.
Option B
13.
Option C
14.
Option D
15.
Option B
16.
Option C
17.
Option A
18.
Option B
19.
Option B

20.

40.6

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