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You may like to read the article on Morse code before attempting this question. Morse's letter analysis was done over 150 years ago, so might there be a better allocation of symbols today?

Florence Nightingale - the Compassionate Mathematician

Florence Nightingale may be well known for her role as a nurse, but she was also an excellent mathematician, collecting and analysing data to help improve hospital conditions.

Reaction Timer

This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.

Estimating Time

Age 11 to 14
Challenge Level

Does it make sense to use averages to see how close someone is to 10 seconds on average?

What else might you need to take into account?