Statistics MCQ Set 1

STATISTICS MCQ SET 1

1. The arithmetic mean of the following data is ______ .
12 , 34 , 45 , 50 , 24

(a) 30

(b) 36 

(c) 33 

(d) 25

Show Answer

Answer: C

2. The arithmetic mean of the following data is _____ .
23 , 17 , 20 , 19 , 21

(a) 20

(b) 19

(c) 23

(d) 21

Show Answer

Answer: A

3. If the mean of six observations 5 , 7 , 9 , a , 11 and 12 is 9 then the value of a is:

(a) 10

(b) 15

(c) 22

(d) 25

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Answer: A

4. If the mean of the data 28 , 26 , 22 , 11 , 13 , x is 20 , then find the value of ‘x’ .

(a) 20

(b) 30 

(c) 25 

(d) 28

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Answer: A

5. Find the mean of the following distribution :
(x) = 4 ,  6  ,   9  ,  10 , 15
(f)  = 5 , 10 , 10 ,   7   ,  8

(a) 9 

(b) 10

(c) 12

(d) 8

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Answer: A

6. Find the mean of the following distribution :
(x) = 5  ,   6   ,   7   ,    8  ,   9
(f)  = 4  ,  8   ,  14  ,   11  , 3

(a) 8.325

(b) 9.125

(c) 7.025

(d) 5.225

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Answer: C

7. If the mean of the following distribution is 6 find the value of p .
(x) :- 2  ,  4  ,  6  , 10  , p+5
(f)  :- 3  ,  2  ,  3  ,   1   ,     2

(a) 7

(b) 8

(c) 9

(d) 10

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 Answer: A

8. If the mean of the following data is 15 , then find the value of k .
(x) :- 5  ,  10  , 15  ,  20  ,  25
(f)  :- 6  ,   k   ,   6   ,  10   ,  5

(a) 7

(b) 8

(c) 6 

(d) 10

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Answer: B

9. 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

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Answer: B

10. Find the median of the daily wages of ten workers from the following data :
Rs.20 , 25 , 17 , 18 , 8 , 15 , 22 , 11 , 9 , 14

(a) 16

(b) 18

(c) 20

(d) 22

Show Answer

Answer: A