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The H.M of a set of values is 2. If each...

The H.M of a set of values is 2. If each value is tripled, the new H.M is equal to

A

2

B

3

C

6

D

none of these

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UNITED BOOK HOUSE-Scottish Church Collegiate School, Question Paper -Exercise
  1. The elements A, B and C have atomic numbers Z -2, Z and Z +1 respecive...

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  2. State and prove the theorem of compound probability.

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  3. The H.M of a set of values is 2. If each value is tripled, the new H.M...

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  4. If the relation between two variable x and y is 5y+7x=11 and the range...

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  5. A dinner party is to be fixed for a group of 100 persons. In this part...

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  6. If var (x) = 7, then var (5 - 3x) is equal to

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  7. The first moment about the value 4 of a variable is 3, then its mean ...

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  8. The sum of the roots of the equation x^3 + 5x + 1 = 0 is

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  9. If x is real, the minimum value of x^2 - 10x + 28 is

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  10. The two digited fermat number is

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  11. A and B are two independent events such that P(A^C) = 0.7, P(B) = k an...

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  12. For two events A and B P(A^C|B^C)+P(A|B^C)=?

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  13. Write a short note on ‘measures of dispersion’.

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  14. Describe cross sectional data with their utility.

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  15. Define Pilot survey.

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  16. If a value of a variable is zero, then what will be its geometric mean...

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  17. What is the main difference between raw moments and central moments?

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  18. Write down the empirical relation between mean, median and mode.

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  19. Let A, B, C be three arbitrary events. Find the expressions for the fo...

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  20. Give the condition when two events A and B will be mutually independen...

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