Math Quiz: Can You Solve The Statistics Questions?
15 Questions
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Questions and Answers
- 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- ) =]( "For any collection of n items , ∑(x- ) =")
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]( "Given∑ (X- )2 = 48 , =20 and n=12. The coefficient of variation is")
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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