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### Theory

 1 Introduction to Data 2 Representation of data 3 Arithmetic mean

### Exercises

 1 Average Difficulty: easy 3 2 Average height Difficulty: easy 3 3 Average income Difficulty: easy 3 4 Arithmetic mean of natural numbers Difficulty: easy 3 5 Average of set of numbers Difficulty: easy 3 6 Arithmetic mean and mode Difficulty: easy 2 7 Arithmetic mean of the series Difficulty: easy 3 8 Arithmetic mean of decimal fractions Difficulty: easy 3 9 Find the added value to the set of numbers Difficulty: medium 4 10 Arithmetic mean and data location Difficulty: medium 4 11 Find the minimum score Difficulty: medium 5 12 Compute the average of values Difficulty: medium 4 13 Arithmetic mean of two numbers (product) Difficulty: hard 6 14 Arithmetic mean of three numbers Difficulty: hard 6

### Tests

 1 Training test Difficulty: medium 10 2 Training test Difficulty: medium 11

### Teacher manual

 1 Methodical recommendation