Calculate standard deviation from summaries - exam scenario
A transport team has \(n=8\), \(\sum x=105\), and \(\sum x^{2}=840\). 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.
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.