# Math Quiz: Can You Solve The Statistics Questions?

15 Questions | Total Attempts: 2711

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• 1.
The range of the first 10 prime numbers 2,3,4,7,11,13,17,  19,23,29  is
• A.

27

• B.

28

• C.

29

• D.

26

• 2.
The least value in a collection of data is 14.1 . If the range of the collection is 28.4, then the greatest value of the collection is
• A.

42.5

• B.

43.5

• C.

42.4

• D.

42.1

• 3.
The greatest value in a collection of data is 72 and the least value     is 28.then the coefficient of range is
• A.

0.44

• B.

0.72

• C.

44

• D.

0.28

• 4.
For a collection of 11 items ∑x =132, then the arithmetic mean is
• A.

12

• B.

11

• C.

14

• D.

13

• 5.
For  any collection of n items , ∑(x-  ) =
• A.

0

• B.

∑x

• C.

X ̅

• D.

N x ̅

• 6.
For  any collection of n items , (∑x)-   =
• A.

(n-1)x ̅

• B.

N x ̅

• C.

(n-2) x ̅

• D.

0

• 7.
If t is the standard deviation of x,y,z, then the standard deviation    of  x+5,y+5,z+5 is
• A.

t

• B.

T/3

• C.

xyz

• D.

T+5

• 8.
If the standard deviation of a set of data is 1.6, then the   variance is
• A.

2.56

• B.

0.4

• C.

1.96

• D.

0.04

• 9.
If the variance of a data is 12.25,then the S.D is
• A.

3.5

• B.

3

• C.

2.5

• D.

3.25

• 10.
Variance of the first 11 natural numbers is
• A.

10

• B.

√5

• C.

√10

• D.

5√2

• 11.
The Variance of 10,10,10,10,10  is
• A.

0

• B.

10

• C.

√10

• D.

5

• 12.
If the variance of 14,18,22,26,30 is 32, then the variance of    28,36,44,52,60 is
• A.

128

• B.

6

• C.

32 √2

• D.

32

• 13.
Standard deviation of a collection of data is 2 . If each value is multiplied by 3,then the standard deviation of the new data is
• A.

6√2

• B.

√12

• C.

4 √2

• D.

9 √2

• 14.
Given∑ (X- )2  = 48 ,    =20 and n=12. The coefficient  of  variation is
• A.

10

• B.

25

• C.

20

• D.

30

• 15.
Mean and Standard deviation of a data are 48 and 12 respectively. The coefficient of variation is
• A.

25

• B.

42

• C.

28

• D.

48

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