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Median of nine observations is 20.45 . I...

Median of nine observations is 20.45 . If 2 is added in last four observations, then new median is

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The mean of 10 observations is 28. If 2 is added to each observation and then each result is divided by 3, find the mean of new observations so obtained.

The mean of 20 observations is 45. If each observation is divided by 3, the new mean is 15

The mean of 5 observations is 20. Including one new observation, the mean is 25. Find the newly included observation.

The mean of n observations is bar(x) . If the first observation is increased by 1, the second by 2 and so on, the new mean is . . . .

The variance of 20 observations is 5. if each observation is multiplied by 2, find the new variance of the resulting observations.

The variance of 15 observations is 8. If each observation is multiplied by 4, then the variance of new observation is ……

The mean of 5 observations is 4.4 and their variance is 8.24 . If three of the observations are 1,2 and 6, find the other two observations.

The following data is for 15 observation obtained in an experiment. sumx_i^2 = 2830, sum x_i = 170 . The wrong observation is 20. If it is taken as 30, then the correct coefficient of variance is ………….

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KUMAR PRAKASHAN-OBJECTIVE SECTION AS PER NEW PAPER SCHEME -Statistics (True/False Statement)
  1. Marks obtained by 10 students in exam of 70 Marks are as follows. 53,4...

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  2. Numbers of observation of the data is n (where n is even) then median ...

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

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

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  5. Mean is the measure of dispersion.

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  6. Co-efficient of variance of one data is 45% and mean is 12 then S.D. i...

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  7. x1,x2,x3,….xn then (x1-barx)+(x2-barx)+(xn-barx)=0.

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  8. For an data if n = 10, sumx1=40,sumxi^2=250 then standard deviation s ...

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  9. variance of 6 observation is 250 then sum(xi-barx)^2=1200.

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  10. a,b,c and d are 4 observations . Their mean and median is zero then b ...

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  11. Marks obtained by 10 students in exam of 70 Marks are as follows. 53,4...

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  12. Numbers of observation of the data is n (where n is even) then median ...

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

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

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  15. Mean is the measure of dispersion.

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  16. Co-efficient of variance of one data is 45% and mean is 12 then S.D. i...

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  17. x1,x2,x3,….xn then (x1-barx)+(x2-barx)+(xn-barx)=0.

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  18. For an data if n = 10, sumx1=40,sumxi^2=250 then standard deviation s ...

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  19. variance of 6 observation is 250 then sum(xi-barx)^2=1200.

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  20. a,b,c and d are 4 observations . Their mean and median is zero then b ...

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