n=20n = 20n=20 ∑x=240\sum x = 240∑x=240 ∑x2=3000\sum x^2 = 3000∑x2=3000
Work out the standard deviation.
Give your answer correct to 3 decimal places.
Practise AQA GCSE Statistics Standard Deviation with exam-style questions for Foundation and Higher tier. 10 questions, matched to the AQA GCSE Statistics (8382) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.