Mean
the arithmetic average of a distribution, obtained by adding the scores and then dividing by the number of scores
The term mean has multiple meanings depending on the context in which it is used. However, in mathematics, the mean is often referred to as the average. It is a statistical measure that is used to describe the central tendency of a given set of numerical data. The mean is calculated by adding up all the values in the data set and then dividing by the total number of values.
There are three types of mean: the arithmetic mean, the geometric mean, and the harmonic mean. The arithmetic mean is the most commonly used type of mean, representing the sum of all values in the data set divided by the total number of values. The geometric mean is used when dealing with data sets that contain values that are multiplied together, and is calculated by taking the nth root of the product of all values in the set. The harmonic mean is used when dealing with data sets that contain rates or ratios, and is calculated by dividing the total number of values by the sum of their reciprocals.
In summary, the mean is a measure of central tendency that allows us to summarize a set of numerical data by giving us an idea of the average value of the dataset.
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