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If two lines of regression are perpendic...

If two lines of regression are perpendicular, then the correlation coefficient r is

A

2

B

`1/2`

C

0

D

None of these

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The correct Answer is:
C
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PUNEET DOGRA-STATISTICS-PRE YEAR QUESTIONS
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  10. What is the mean of n odd natural numbers. (a)n (b)(n+1)/(2) (c)(n(...

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  13. If the mean of few observation is 40 and standard deviation is 8. then...

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  14. Which of the following is measure of dispersion?

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  15. Let X and Y be two related variables. The two regression lines are giv...

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  16. What is the mode for the data 20, 20, 20, 21, 21. 21, 21, 21, 22, 22, ...

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  17. Consider the following statements: 1. Every composite number is a na...

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  18. Consider the following statements: I Two independent variables are a...

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  19. A variate X takes values 2, 9, 3, 7, 5, 4, 3, 2, 10.What is the median...

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