Pace Work. Math
Дата: 13.04.2020
Тема: Середнє арифметичне
Зміст уроку: Значення "Середнє арифметичне", розв'язання задач та прикладів

1. Study the theory block

The arithmetic mean is the sum of all the numbers in a data set divided by the quantity of numbers in that set.
Note that this definition refers to the arithmetic mean, as distinct from other types of means like geometric mean or harmonic mean.
The arithmetic mean is commonly referred to as the average, because it is a common measure of central tendency among a data set. However, there are other ways of measuring an average, including median and mode, so the term should be clarified if there is any uncertainty as to which average a person is using.

The arithmetic mean can be visualized as a balancing point on a scale. Half the numerical "mass" of the data set will land above the value of the mean, while the other half will land below. The mean may or may not be one of the numbers that appears in the number set.

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