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Let x be a variable assuming the values 1, 2,……….k and let `F_1 = n`, `F_2`,……`F_k` be the corresponding cumulative frequencies of the greater than type show that `barx = 1/n overset(k)underset(i=1)sum F_i`.

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UNITED BOOK HOUSE-Model Test Set - 9-Exercise
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  3. Write the axiomatic definition of probability?

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  4. Sum of the squares of deviation is least about

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  5. What do you mean by a cumulative frequency distribution. Point out its...

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  7. For three unequal positive real numbers a, b, c show that (b + c) (c +...

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  8. If x1, x2,…….xn are real quantities. Prove that 1/n overset(n)underset...

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  9. First the greatest common divisor of 801 and 423.

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  10. State and prove Remainder theorem.

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  11. Show that if events A and B are independent, then so are A^c and B^c.

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  12. A Box contains 5 white and 3 black ball. One ball is drawn and it is s...

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  13. A box contains 7 white and 5 black balls two are drawn at random find ...

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  15. Explain the Time reversal and Factor reversal tests of index numbers.

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  16. What are different measures of skewness.

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  17. Let x be a variable assuming the values 1, 2,……….k and let F1 = n, F2,...

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  18. Suppose that all the four possible outcomes e1, e2, e3, e4 of an exper...

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  19. Prove that Fisher's ideal index number lies between Laspeyre's and Paa...

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  20. Define standardised death rate. Discuss the direct method of standardi...

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