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The mean of five numbers is 30. If one n...

The mean of five numbers is `30.` If one number is excluded, their mean becomes `28.` The excluded number is

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Mean of the given five numbers `= 30`
Sum of these five numbers ` = ( 30xx 5) = 150`
mean of the remaining four numbers = 28
Sum of these numbers =` ( 28xx 4) =112`
Excluded number `= ( 150 -112) =38. `
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RS AGGARWAL-MEAN , MEDIAN AND MODE OF UNGROUPED DATA -Multiple Choice Questions (Mcq)
  1. The mean of five numbers is 30. If one number is excluded, their mean ...

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  2. If the mean of five observations x ,\ x+2,\ x+4,\ x+6,\ x+8\ i s\ 11...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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