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If overlinex is the mean of a set of n o...

If `overlinex` is the mean of a set of n observations `x_1 , x_2 , x_3…..,x_n` then `sum_(i=1)^n(x_i-overlinex)` is equal to

A

M . D . About mean

B

S.D

C

0

D

None of these

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The correct Answer is:
C
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
  1. Choose the correct answer: The hybridisation of the carbon atom (under...

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  2. Find the mean of 2,5,7 and 9

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  3. If overlinex is the mean of a set of n observations x1 , x2 , x3…..,xn...

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  4. If the mean of 3, 4, x, 7, 10 is 6 then the value of x is

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  5. Weight of 5 students is given as 54,44,47,65 and 51. Find the mean of ...

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  6. The Mean of a set of numbers is overlinex . If each number is incre...

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  7. The mean of a set of numbers is overlinex . If such numbers is multip...

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  8. The mean of the squares of first natural numbers is

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  9. For a continuous series the mean is computed by the following formula

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  10. If the mean of first n natural numbers is equal to (n+7)/3 , then n i...

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  11. The mean of discrete observation y1, y2,…yn is given by

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  12. The mean of 130, 126, 68, 50, 1 is

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  13. If di is the deviation of a class mark yi from 'a' the ' assumed mean ...

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  14. The mean of first three terms is 14 and mean of next two terms is 18. ...

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  15. Geometric mean of the numbers 2, 2^2, 2^3, ….,2^(n) numbers is

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  16. The geometric mean of numbers observations x1, x2, x3,….,xn is

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  17. The geometric mean of numbers observations 4, 8, 16, is

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  18. The harmonic mean of 4, 8, 16, is

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  19. The harmonic mean of 3, 7, 8, 10, 14, is

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  20. Product of n positive number is unity. The sum of these numbers can n...

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