School systems in many countries use a scale of numbers from 1 to 5, 6, or sometimes

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School systems in many countries use a scale of numbers from 1 to 5, 6, or sometimes even 10. For example, in Germany, 1 is the best grade, while in Hungary, 1 is the fail grade. In Romania, on the other hand, 5 is the minimum passing grade and 10 is the highest grade.

a. Do you think school grades are numerical or categorical? Explain.

b. What is the measurement scale?

c. Do you think an average grade can or should be calculated?

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