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There are 4 NRICH Mathematical resources connected to SM - Discrete RVs, you may find related items under Stage 5 Statistics mapping document.
Broad Topics > Stage 5 Statistics mapping document > SM - Discrete RVsHow could you compare different situation where something random happens ? What sort of things might be the same ? What might be different ?
Use your skill and judgement to match the sets of random data.
Your data is a set of positive numbers. What is the maximum value that the standard deviation can take?
Given the mean and standard deviation of a set of marks, what is the greatest number of candidates who could have scored 100%?