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If var (x) = 7, then var (5 - 3x) is equ...

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

A

63

B

21

C

68

D

none of these

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UNITED BOOK HOUSE-Scottish Church Collegiate School, Question Paper -Exercise
  1. If the relation between two variable x and y is 5y+7x=11 and the range...

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

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

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

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

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

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  7. The two digited fermat number is

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

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

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

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  11. Describe cross sectional data with their utility.

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  12. Define Pilot survey.

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

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

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

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

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

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  18. A,B and C are three mutually exclusive and exhaustive events and P(A) ...

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  19. Describe the sample space when one coin is tossed repeatedly till head...

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  20. Explain the given word : Organism.

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