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The mean of 100 observation is 50. If on...

The mean of 100 observation is 50. If one of the observation which was 50 is replaced by 150, the resulting mean will be

A

50.5

B

51

C

51.5

D

52

Text Solution

Verified by Experts

The correct Answer is:
B
Resulting sum = `( 50 xx 100 -50 +150) =( 5150 -50) = 5100`
Resultingh mean = `5100/100 = 51`
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RS AGGARWAL-MEAN , MEDIAN AND MODE OF UNGROUPED DATA -Multiple Choice Questions (Mcq)
  1. If the mean of five observations x ,\ x+2,\ x+4,\ x+6,\ x+8\ i s\ 11...

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  2. If the mean of the observation x, x+3, x+5, x+7 and x+10 is 9, then me...

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  3. if overlinex is the mean of x(1),x(2),x(3),….,x(n) " then "sum(n)^(i=1...

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  4. If each observation of the data is decreased by 8 then their mean

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  5. The mean weight of 6 boys in a group is 48 kg. the individual weight o...

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  6. The mean of the marks scored by 50 students was found to be 39 later o...

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  7. The mean of 100 items was found to be 64. Later on it was discovered t...

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  8. The mean of 100 observation is 50. If one of the observation which was...

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  9. Let barx be the mean of x(1), x(2), ………, x(n) and bary be the mean of ...

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  10. If barx is the mean of x(1), x(2), …………., x(n), then for a ne 0, the m...

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  11. If barx(1), barx(2), barx(3),………barx(n) are the means of n groups with...

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  12. The mean of the following data is 8. Then, the value of p is

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  13. The runs scored by 11 members of a cricket team are 15,34,56,27,43,...

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  14. The weight of 10 students (in kg) are 55,40,35,52,60,38,36,45,31,44....

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  15. The median of the numbers 4,4,5,6,7,7,12,3,12 is

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  16. The median of the numbers 84,78,54,56,68,22,34,45,39,54 is

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  17. Mode of the data 15,17,19,14,18,15,14,20,19,14,15,19,14 is

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  18. The median of the data arranged in ascending order 8,9,12,18,(x+2),(x+...

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