Calculate covariance from summaries - graph-supported reasoning
A clinic intake study has \(\sum (x-\bar{x})(y-\bar{y})=68\) for \(n=13\) paired observations. Calculate the sample covariance. Enter the requested value and choose the interpretation that matches the result.
AI writing feedback
How would you answer this question in your own words? The AI will analyse your response and give feedback on reasoning, evidence, and expression.
Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.