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Maths-

General

Easy

Question

If r=-0.97, then

Correlation is negative and curved
Correlation is linear and negative
Correlation is in third and fourth quadrant
None of these

The correct answer is: Correlation is linear and negative

It is obvious.

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If r=0.2, then linear correlation will be necessarily

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Coefficient of correlation between x and y for the following data will be approximately

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Coefficient of correlation from the following data will be

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Coefficient of correlation between x and y for the following data will be

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Karl Pearson's correlation coefficient between x and y for the following data will be approximately

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Karl Pearson's coefficient of rank correlation between the ranks obtained by ten students in Mathematics and Chemistry in a class test as given below is

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Karl Pearson's coefficient of correlation between x and y for the following data is

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The mean of a set of observation is $stack x with ̄ on top$ . If each observation is divided by a, a¹ 0 and then is increased by 10, then the mean of the new set is

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