STATISTICS MCQ SET 5
1. Find the mean deviation about the median for the following data :
4 , 6 , 9 , 3 , 10 , 13 , 2 .
(a) 3.28
(b) 2.38
(c) 4.28
(d) 3.38
Answer: A
2. The mean deviation median for the given data :
52 , 56 , 66 , 70 , 75 , 80 , 82 is :
(a) 9
(b) 7
(c) 3
(d) 6
Answer: A
3. Compute Coefficient of M.D. from median for following series .
3 , 7 , 12 , 14 , 15 , 18 , 22
(a) 0.226
(b) 0.336
(c) 0.356
(d) 0.426
Answer: B
4. The mean deviation about mode for the given data :
7 , 4 , 10 , 9 , 15 , 12 , 7 , 9 , 7 is:
(a) 2.36
(b) 2.56
(c) 2.16
(d) 3.56
Answer: B
5. The mean deviation about mode for the given data :
2 , 4 , 4 , 3 , 2 , 4 , 1 is :
(a) 1.142
(b) 1.243
(c) 1.213
(d) 1.321
Answer: A
6. If the mean is 25 and the standard deviation is 5 then the coefficient of variation is :
(a) 20%
(b) 48%
(c) 60%
(d) 27%
Answer: A
7. If the standard deviation of a setย of numbers is 3 and the arithmetic mean of these numbers is 6 , what is the coefficient of variation of these numbers?
(a) 125
(b) 75
(c) 50
(d) 100
ย Answer: C
8. The median of a set of 11 distinct observations is 73.2 . If each of the largest five observations of the set is increased by 3 , then the median of the new set :
(a) Is 3 times that of the original set
(b) Is increased by 3
(c) Remains the same as that of the original set
(d) Is decreased by 3
Answer: C
9. The median of a set of observations 15 , 16 , 18 , 22 , x + 2 , x + 3 , 26 , 27 , 30 arranged in ascending order is 24 , then find the value of x .
(a) 26
(b) 25
(c) 20
(d) 22
Answer: D
10. The following are the marks of 9 students in a class . Find the median .
34 , 32 , 48 , 38 , 24 , 30 , 27 , 21 , 35
(a) 24
(b) 32
(c) 38
(d) 21
Answer: B
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