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Answer the following questions : If for a random variable X, `E(X-1)^2 = 10` and `E(X-2)^2 =6`, find var(X).

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UNITED BOOK HOUSE-HIGHER SECONDARY EXAMINATION 2018-Exercise
  1. Answer the following questions :What do you mean by trend for time ser...

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  2. Answer the following questions : Write down two demerits of determinin...

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  3. Answer the following questions : If for a random variable X, E(X-1)^2 ...

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  4. 30th term of the AP: 10, 7, 4, …, is

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  5. Answer the following questions: What is meant by bias?

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  6. Answer the following questions: If the correlation coefficient between...

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  7. Answer the following questions : Write a note on Scatter diagram.

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  8. Answer the following questions : Under which condition a probability m...

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  9. Which term of the AP: 3, 8, 13, 18, …, is 78?

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  10. Answer the following questions in short: In case of perfect disagreeme...

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  11. A picnic is arranged to be held on a particular day. The weather forec...

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  12. Let f(x) be a polynomial satisfying f(0)=2, f'(0)=3 and f''(x)=f(x). A...

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  13. Answer the following questions : If m things are distributed among a m...

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  14. Answer the following questions : Mention, appropriate conditions, show...

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  15. 11th term of the AP: -3, −12 , -21, …, is

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  16. If m(gtn) and n be two positive integers then product n(n-1)(n-2)……….(...

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  17. Answer the following questions: What is meant by bias?

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  18. Find the number of terms of the following AP 7, 13, 19, …, 205

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  19. Answer the following questions : Distinguish between Parameter and Sta...

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  20. Answer the following questions in short: Define Spearman's Rank-correl...

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