MEDIUM
Earn 100
What is correlation?
Important Questions on Interpreting and Comparing Data
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If the equation of the two regression lines are and then the correlation coefficient between and is equal to______.
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If and , then is equal to:
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If scatter diagram from a line move from lower left to upper right corner then the correlation is______.
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Which of the following is spurious correlation?
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Consider to regression line . Find the correlation coefficient between and :
EASY
The Covariance between two variables is
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Find correlation coefficient:
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Prove that : Value of correlation coefficient lies between .
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If the correlation coefficient between and is then Find the correlation coefficient between and is:
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Scatter diagram does not help us to
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Find the coefficient of correlation from the following data:
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Find the coefficient of correlation from the regression lines: .
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If the two variables do not have linear relationship between them then they have a correlation coefficient equal to
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What are the different types of correlation?
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Write down the type of correlation shown in the scatter graph.
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Write down the type of correlation shown in the scatter graph.
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Give an example for no correlation
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The correlation coefficient of and is symmetric. Hence
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Write down the type of correlation shown in the scatter graph.
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Write down the type of correlation shown in the scatter graph.
