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Arranging the data 9, 10, 12, 15, (a + 1...

Arranging the data 9, 10, 12, 15, (a + 1), (a + 3), 32, 35, 36, 40 in ascending order if the median is 20, then (a + 3) =

A

18

B

19

C

21

D

none of these

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UNITED BOOK HOUSE-Statistics : Mean, Median, Ogive, Mode-Exercise
  1. If 35 is removed from the data 30, 34, 35, 36, 37, 38, 39, 40 then the...

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  2. If the median of 20, 19, 7, 9, 17, 16, 11, x, 13 is 15 then the value ...

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  3. Arranging the data 9, 10, 12, 15, (a + 1), (a + 3), 32, 35, 36, 40 in ...

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  4. The mean of r numbers of terms of a series is bary. If the sum of 1st ...

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  5. In a cricket match the runs of 11 players are 14, 30, 43, 32, 12, 50, ...

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  6. Which of the following is not a measure of central tendency?

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  7. The arithmetic mean of 1, 2, 3, ……., n is

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  8. For a frequency distribution, mean, median and mode are connected by t...

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  9. The mean of n observations is barX. If the first item is increased by ...

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  10. Mode is

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  11. If ui = (xi - 25)/(10),sumfiui =20, sumfi = 100, then barx =

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  12. The mean of 1, 3, 4, 5, 7, 4 is m. The numbers 3, 2, 2, 4, 3, 3, p hav...

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  13. If the median of the data : 24, 25, 26, x + 2, x + 3, 30, 31, 34 is 27...

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  14. The mean of a frequency distribution is 8.1, if fixi = 132 + 5K and f...

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  15. The mean of first n odd natural numbers is (n^2)/(81), then n equals

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  16. If the mean of 6, 7, x, 8, y, 14 is 9, then

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  17. If 35 is removed from the data 30, 34, 35, 36, 37, 38, 39, 40 then the...

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  18. Median of a frequency distribution indicate graphically with the help ...

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  19. The mode can be obtained geometrically from

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  20. If the mean of observations xi, x2,……., xn is barx, then the mean of (...

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