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The variance of observations 3,4,5,8 is...

The variance of observations 3,4,5,8 is

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3.5
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The average of the observations 3, 4, 5, 8, 12, 10, 13, 16, 18, 11 is ..........

prove that if the variance of the observations x_1,x_2,x_3,…….,x_n is sigma^2 then the variance of x_1+a,x_2 +a, x_3 + a,………….., x_n + a is sigma^2 .

Given that bar(x) is the mean and sigma^(2) is the variance of n observation x_(1), x_(2), …x_(n). Prove that the mean and sigma^(2) is the variance of n observations ax_(1),ax_(2), ax_(3),….ax_(n) are abar(x) and a^(2)sigma^(2) , respectively, (ane0) .

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KUMAR PRAKASHAN-OBJECTIVE SECTION AS PER NEW PAPER SCHEME -Statistics (Fill in the Blanks)
  1. Median of nine observations is 20.45 . If 2 is added in last four obse...

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  2. Suppose in group A, 100 observations are 101 , ….. 200 and in group B ...

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  3. If the standard deviation of variable x is 4 and y = (3x + 7)/(4) then...

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  4. The variance of observations 3,4,5,8 is

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  5. The mean of 100 observations is 50 and their standard deviation is 5. ...

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  6. Let a,b,c,d,e be the observations with mean m and standard deviation S...

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  7. S.D. of the observation x1, x2, x3 ..... xn is 3.5 then S.D. of -2x 1...

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  8. Median of the data 9,15,20,22,8,17,10,18,14,25 is …..

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  9. Find x if the median of the observation 33,28,20,25,34 and x is 29.

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  10. Median of nine observations is 20.45 . If 2 is added in last four obse...

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  11. Suppose in group A, 100 observations are 101 , ….. 200 and in group B ...

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  12. If the standard deviation of variable x is 4 and y = (3x + 7)/(4) then...

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  13. The variance of observations 3,4,5,8 is

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  14. The mean of 100 observations is 50 and their standard deviation is 5. ...

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  15. Let a,b,c,d,e be the observations with mean m and standard deviation S...

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  16. S.D. of the observation x1, x2, x3 ..... xn is 3.5 then S.D. of -2x 1...

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  17. Median of the data 9,15,20,22,8,17,10,18,14,25 is …..

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  18. Find x if the median of the observation 33,28,20,25,34 and x is 29.

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