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In which one of the following cases woul...

In which one of the following cases would you except to get a negative correlation?

A

The ages of husbands and wives

B

Shoe size and intelligence

C

Insurance companies profits and the number of claims they have to pay

D

Amount of rainfall and yield of crop

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The correct Answer is:
C
By definition.
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NDA PREVIOUS YEARS-STATISTICS-MCQs
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  2. Consider the following statements: 1. Sum of deviations from mean is...

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  3. What is the median of the numbers 4.6, 0, 9.3, -4.8, 7.6,2.3,12.7,3.5,...

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  4. In a test in Mathematics, 20% of the students obtained ''first class''...

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  5. The mean and standard deviation of a set of values are 5 and 2 respect...

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  6. Calculate the mean and standard deviation of first natural numbers.

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  7. The correlation coefficient computed from a set of 30 observation is 0...

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  8. The mean age of a combined group of men and women is 25 yrs . If mean...

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  9. Consider the following statements: 1. If 10 is added to each entry o...

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  10. The variance of 25 observations is 4. If 2 is added to each observatio...

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  11. If the regression coefficient of Y on X is -6, and the correlation coe...

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  12. The set of bivariate observation (x(1),y(1)),(x(2),y(2)),…..(xn,yn) ar...

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  13. An alalysis of monthly wages paid to the workers in two firms A and B ...

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  14. Which one of the following can be obtained from an ogive?

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  15. In any discrete series (when all values are not same ) is x represents...

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  16. In which one of the following cases would you except to get a negative...

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  17. The mean of 100 observation is 50 and the standard deviation is 10. If...

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  18. Consider the following statements: 1. The algebraic sum of deviation...

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  19. Let the correlation coefficient between X and Y be 0.6. Random variabl...

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  20. If all the natural numbers between 1 and 20 are multiplied by 3, then...

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