n=15n = 15n=15
∑y=72 \sum y = 72 ∑y=72 ∑y2=396 \sum y^2 = 396 ∑y2=396Calculate the standard deviation.
Give your answer correct to 1 decimal place.
Practise Edexcel GCSE Statistics Standard Deviation with exam-style questions for Foundation and Higher tier. 10 questions, matched to the Edexcel GCSE Statistics (1ST0) 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.