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If arithmetic mean and coefficient of va...

If arithmetic mean and coefficient of variation of a variable x are 10 and 50% respectively, find Var (5 - 2x).

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UNITED BOOK HOUSE-Question Paper 2016-Exercise
  1. What do you mean by price relative?

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  2. Define simple aggregative price index.

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  3. If arithmetic mean and coefficient of variation of a variable x are 10...

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  4. Define discrete variable and continuous variable.

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  5. Explain the meaning of ordinal data with example.

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  6. If A and B are mutually exclusive events, show that P(A/(A uu B)) = fr...

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  7. Prove that P(A^C) = 1 - P(A)

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  8. A box contains 15 balls numbered 1 to 15. Find the probability that a ...

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  9. What is mail questionnaire method? When this method is useful?

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  10. Write down the different steps for drawing Ogive.

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  11. Suppose a variable x takes only two values x1 and x2 with frequencies ...

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  12. What is interpolation? Explain Delta operator?

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  13. Find Delta(Delta(ax^2 + bx + c)), (a ne 0).

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  14. Explain the concepts of pairwise independence and mutual independence ...

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  15. A1, A2……….An are n independent events such that P(Ai) = 1 - qi, I = 1,...

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  16. What is Time Reversal Test? Show that Fisher's Index No. satisfies Tim...

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  17. Suppose a variable assumes the values 0, 1, 2………….n with frequencies p...

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  18. In a frequency table, the upper boundary of each class-interval has a ...

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  19. Write down two cases when mean deviation about mean and standard devia...

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  20. There are three urns containing respectively bi black balls, wi white ...

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