IB skill practice

Calculate correlation from covariance

Use covariance and standard deviations to calculate a correlation coefficient.

Paper 1, Paper 2 5 marks Difficulty 5

Calculate correlation from covariance - exam decision

A retail demand model has covariance \(9\), \(s_x=6\), and \(s_y=4\). Calculate the correlation coefficient. Confirm the interpretation before entering the result. Enter the requested value and choose the interpretation that matches the result.

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