Math Quiz: Can You Solve The Statistics Questions?

15 Questions | By Padasalai10m | Last updated: Dec 13, 2019 | Total Attempts: 2319

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Math Quiz: Can You Solve The Statistics 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- ) =
- 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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