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Find the variance of first n natural num...

Find the variance of first n natural numbers.

A

Only 1

B

Only 11

C

Both I and II

D

Neither I nor 11

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The correct Answer is:
B
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  2. Calculate the coefficient of rank correlation.

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  3. Find the variance of first n natural numbers.

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  4. What is the mean of the squares of the first 20 natural numbers? (a)1...

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  8. The number of telephone calls received in 245 successive one minute in...

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  9. Which of the following statements are correct regarding the molecular ...

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  10. In a less than cumulative frequency distribution, frequency and cumula...

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  11. The mean and standard diviation of 100 items are 50,5 and of 150 items...

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  12. The mean and standard deviation of 6 observations are 8 and 4 respecti...

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  13. The mean and standard deviation of 100 items are 50, 5 and that of 150...

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  14. if the regression coefficient of Y on X is4/3,then the regression coef...

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  15. The mean of 20 observations is 15. On checking, it was found that two ...

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  16. The arithmetic mean of the square of the first n natural number is. (...

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  17. Consider the following statements I. Both the regression coefficien...

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  18. Which one of the following measures is determined only after the const...

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  19. BOD is measure of

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  20. What is the variance of first 11 natural numbers?

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