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Mean of Ungrouped data...

Mean of Ungrouped data

A

Mean = `(sumx_i)/(sumf)`

B

Mean = `(sumx)/(n)`

C

Mean = `(sumfx)/(sumn)`

D

Mean = `a+ (sumfx)/(n)`

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The correct Answer is:
B
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MCGROW HILL PUBLICATION-STATISTICS -MULTIPLE CHOICE QUESTIONS
  1. In an examination, a candidate scores the following percentage of mark...

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  2. If the standard deviation for the marks obtained by a student in month...

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  3. Mean of Ungrouped data

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  4. If the variable takes values 0,1,2,…, n with frequencies q^(n),""^(n)C...

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  5. The average monthly income of a four members of a family is Rs 610.25,...

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  6. The mean of x(1) andx2 is M1 and that of x1, x2, x3 ... x4 is M, the...

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  7. If M and M(g) represents the mean of the raw and grouped data, respe...

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  8. The mean of x(1),x(2)....... x(50) is M, if every xị, i = 1, 2 ..... 5...

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  9. If the first five elements of the set x(i) +5, i = 1, 2, 3 ..... 5 an...

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  10. The mean of the cubes of the first n natural numbers is

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  11. If M= (x(1)+x(2).....+x(20))/(20) then the value of sum(i=1)^20((xi-...

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  12. Arithmetic mean of first n natural numbers is "".

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  13. The arithmetic mean of the squares of the first n natural numbers is

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  14. A school has "20" teachers,one of them retires at the age of 60years a...

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  15. The mean of the following distribution is {:("Class",0-5,5-10,10-15...

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  16. The ages (in years) of a family of 6 members are 1, 5, 12, 15, 38 and ...

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  17. The mean of the series a, a + d, a + 2d, …, a + 2 nd, is

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  18. If each observation is multiplied by 1/3 then the mean of the new data...

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  19. The mean of first 10 natural numbers.

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  20. The value of sum(i=1)^(n) (x(i)-barx) where is the arithmetic mean...

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