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problem
Spread
Given the mean and standard deviation of a set of marks, what is
the greatest number of candidates who could have scored 100%?
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problem
Maximum scattering
Your data is a set of positive numbers. What is the maximum value
that the standard deviation can take?
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problem
Distribution differences
How could you compare different situation where something random
happens ? What sort of things might be the same ? What might be
different ?