Use covariance and correlation of random variables - covariance and correlation link item
Case A1. Use \(\sigma_X=3\), \(\sigma_Y=5\), and the association information shown on the scatter diagram. Calculate the requested covariance or correlation quantity.
Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.