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The mean of 10 number is 20. If 5 is ...

The mean of 10 number is 20. If 5 is subtracted from every number, what will be the new mean?

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RD SHARMA ENGLISH-MEASURES OF CENTRAL TENDENCY-All Questions
  1. The mean of 100 items was found to be 30. If at the time of calcula...

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  2. The mean monthly salary of 10 members of a group is Rs. 1445, one m...

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  3. The mean of 10 number is 20. If 5 is subtracted from every numbe...

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  4. The mean of 16 numbers is 8. If 2 is added to every number, what ...

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  5. The mean of 5 number is 18. If one numbers is excluded, their me...

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  6. If the mean of five observations x , x + 2 , x + 4 , x + 6 , x + 8...

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  7. If x1, x2, x3,....xn are n values of a variable X such that Find the ...

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  8. The sum of the deviations of a set of n values x1, x2 ,xn measured fro...

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  9. If the heights of 5 persons are 140cm, 150cm, 152cm, 158cm and 161c...

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  10. Find the mean of 994, 996, 998, 1002 and 1000

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  11. Find the mean of first five natural numbers.

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  12. Find the mean of all factors of 10.

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  13. Find the mean of first 10 even natural numbers.

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  14. Find the mean of x, x+2, x+4, x+6, x+8

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  15. Find the mean of first five multiples of 3.

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  16. Following are the weights (in kg) of 10 new born babies in a hospit...

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  17. The percentage of marks obtained by students of a class in mathemat...

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  18. The numbers of children in 10 families of a locality are: 2, 4, 3, 4...

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  19. If M is the mean of x1 , x2 , x3 , x4 , x5 and x6, prove that (x1 − M)...

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  20. Duration of sunshine (in hours) in Amritsar for first 10 days of Aug...

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