IB skill practice

Calculate correlation from covariance

Use covariance and standard deviations to calculate a correlation coefficient.

Paper 1, Paper 2 5 marks Difficulty 4

Calculate correlation from covariance - interpretation check

A water monitoring program has covariance \(7\), \(s_x=6\), and \(s_y=6\). Calculate the correlation coefficient. Enter the requested value and choose the interpretation that matches the result.

Worked practice: result and interpretation

Calculate the requested result first, then choose the interpretation that follows from it.