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If a variate X is expressed as a linear ...

If a variate X is expressed as a linear function of two variates U and V in the form X=aU+bV, then the mean `overline(X)` of X is

A

`a bar(U)+b bar(V)`

B

` bar(U)+bar(V)`

C

`b bar(U)+a bar(U)`

D

none of these

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The correct Answer is:
A
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OBJECTIVE RD SHARMA ENGLISH-MEASURES OF CENTRAL TENDENCY-Exercise
  1. If the mean of a set of observations x(1),x(2), …,x(n)" is " bar(X), t...

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  2. If a variate X is expressed as a linear function of two variates U and...

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  3. The AM of n numbers of a series is bar(X). If the sum of first (n-1)...

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  4. The mean of a set of numbers is overline(X). If each number is divided...

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  5. The weighted mean of the first n natural numbers whose weights are equ...

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  6. The AM of the series 1,2,4,8,16,..,2^(n) is

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  7. If the mean of n observations x1,x2,x3...xn is barx then the sum of de...

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  8. The one which is the measure of the central tendency is

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  9. The most stable measure of central tendency is

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  10. The mean of the distribution, in which the values of X are 1, 2, ..,n ...

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  11. 10 is the mean of a set of 7 observations and 5 is the mean of a set o...

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  12. A statistical measure which cannot be determind graphically is

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  13. The measure of central tendency of a statistical data which takes into...

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  14. An ogive is used to determine

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  15. The geometric mean of the series 1,2,4,8,16,....,2^n is

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  16. If G(1),G(2) are the geometric means fo two series of observations and...

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  17. If G is the GM of the product of r sets of observations with geometric...

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  18. A group of 10 items has arithmetic mean 6. If the arithmetic mean of 4...

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  19. The arithmetic mean of a set of observations is bar(X). If each observ...

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  20. The weighted mean of the first n natural numbers whose weights are equ...

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