Arithmetic Elementary Statistics Quiz-3

Question 1

Time: 00:00:00
Let x be the upper limit of the modal class and y be the class mark of the median class of the following data:



What is the value ( x - y)?

13

13

12.5

12.5

11.8

11.8

10.7

10.7

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Question 2

Time: 00:00:00
If the mean of 26 observations is 29, and on adding four more observations, the new mean becomes 32. What is the mean of the last four observations?

32.45

32.45

51.5

51.5

37

37

50.8

50.8

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Question 3

Time: 00:00:00
Find the mode of the given set of numbers:-

6,11,5,8,6,8,5,11,8,9,7,11,5,6,8,9,11,8,7,6,9.

8

8

10

10

6

6

5

5

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Question 4

Time: 00:00:00
What is the difference between the mean and the median of the given data ?

5,9,8,15,12,9,2,19,21,11

2.3

2.3

1.5

1.5

1.1

1.1

3.5

3.5

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Question 5

Time: 00:00:00
If the mode of a data is 12 and the arithmetic mean is 9,the median is______________?

15

15

12

12

10

10

20

20

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Question 6

Time: 00:00:00
In 50 numbers 10 are threes,15 are fours,18 are fives and remaining are sixes.if a,b and c respectively represent the mean,mode and median of data,what is the value of a+2b-c?

10

10

12.65

12.65

9.94

9.94

8.34

8.34

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Question 7

Time: 00:00:00
If mean of a distribution is 10 and the standard deviation is 4. What is the value of the coefficient of variation?

40%

40%

35%

35%

20%

20%

50%

50%

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Question 8

Time: 00:00:00
The salary in rupees of 10 employees in a company per day is 50, 55, 60, 65, 70, 72, 75, 80, 84, 89.
What is the standard deviation in the above data?

13.751

13.751

11.983

11.983

9.432

9.432

5.754

5.754

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Question 9

Time: 00:00:00
A particular distribution is represented by two data points. If the Range and Standard deviation of the distribution are R and S respectively, what is the relation between them?

S=\frac{R}{2}

S=\frac{R}{2}

S=\sqrt{R}

S=\sqrt{R}

S=2R

S=2R

S=R

S=R

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Question 10

Time: 00:00:00
What is the mean of the two modes in the body in the only binomial distribution among the above?

3

3

7

7

5

5

8

8

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["0","40","60","80","100"]
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