IB skill practice

Calculate standard deviation from summaries

Use summary totals to calculate sample standard deviation.

Paper 1, Paper 2 5 marks Difficulty 5

Calculate standard deviation from summaries - exam scenario

A regional clinic has \(n=9\), \(\sum x=93\), and \(\sum x^{2}=760\). Calculate the sample standard deviation. Confirm the context meaning before entering the value. 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.