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If the standard deviation of 1, 2, 3, 4,...

If the standard deviation of 1, 2, 3, 4,…., 10 is` sigma` , then the standard deviation of 11, 12, 13, 14,….20 is

A

`sigma+10`

B

`10 sigma`

C

`sigma`

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. The variance of 2, 4, 6, 8, 10, is

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  2. The S.D of 7 scores 1, 2, 3, 4, 5, 6, 7, is

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  3. If the standard deviation of 1, 2, 3, 4,…., 10 is sigma , then the sta...

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  4. S.D. of numbers observation a1, a2, a3,…..an is sigma then the S.D. of...

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  5. If each observation of a raw data whose variance is sigma^2 is increas...

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  6. Let sigma be the standard deviation of n observations. Each of the n o...

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  7. For a frequency distribution, standard deviation is computed by

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  8. Mean of first n natural numbers is

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

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

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

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  12. Geometric mean of 3, 9 and 27 is

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

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

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

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

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

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

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

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

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