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(x1-overlinex)+(x2-overlinex)+....+(xn-o...

`(x_1-overlinex)+(x_2-overlinex)+....+(x_n-overlinex)=`

A

0

B

1

C

`overlinex`

D

None of these

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The correct Answer is:
A
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PATHFINDER-STATISTICS AND MATHEMATICAL REASONING-QUESTION BANK
  1. For a frequency distribution, standard deviation is computed by

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  2. Mean of first n natural numbers is

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  3. (x1-overlinex)+(x2-overlinex)+....+(xn-overlinex)=

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  4. If the mean of the table is 8, then find the value of P.

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  5. A factory employs 100 workers of whom 60 in the first shift and 40 wo...

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  6. Geometric mean of 3, 9 and 27 is

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  7. The median of the items 6, 10, 4, 3, 11, 22, 18, is

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  8. If median = (mode + 2 mean ) Mean, then Mean is equal to

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  9. The scores of a batsman in ten innings are : 38, 70, 48, 34, 42, 55, 6...

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  10. The Standard Deviation of scores 1, 2, 3, 4, 5 is

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  11. If the mean of the first n odd natural numbers be numbers itself, then...

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  12. The A.M of the series 1, 2, 4, 8, 16…., 2^n is

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  13. If the mean of the numbers x1, x2, x3,….xn is overlinex, then the mea...

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  14. Mean of the first n terms of the A.P a,(a+d),(a+2d),…..is

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  15. If mu is the mean of a distribution , then sumfi(yi-mu) is equal to

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  16. If the mean of n observations 1^2, 2^2, 3^2,….n^2 is (46n)/(11) then ...

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  17. The mean of 50 observations is 36. If two observations 30 and 42 are d...

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  18. the weighted mean of first n natural numbers whose weights are equal ...

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  19. A group of 10 items has mean 6 If the mean of 4 of these items is 7.5 ...

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  20. The mean of a set of observations is overlinex If observations is div...

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