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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?

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Substitution Cipher

Find the frequency distribution for ordinary English, and use it to help you crack the code.

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Who's the Best?

Which countries have the most naturally athletic populations?

What's the Weather Like?

Stage: 3 Challenge Level: Challenge Level:2 Challenge Level:2

If you are not familiar working with Excel or an equivalent spreadsheet program, you may find these help sheets useful:

Bar Chart Help
Averages Help
Averages, Quartiles and Spread Help
Scatter Diagrams and Correlation Help