The weights of the fish in a lake are normally distributed with mean 480 g and standard deviation 50 g.
Mary caught a fish from the lake.
The weight of the fish was 450 g.
Calculate the standardised weight of Mary's fish.
Julie and Pam each caught a fish from the lake.
The standardised weight of Julie's fish is -1.5.
The standardised weight of Pam's fish is 0.65.
Compare the weights of these two fish.
Practise AQA GCSE Statistics Standardised Scores with exam-style questions for Foundation and Higher tier. 6 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.