What is an Arithmetic Mean

What is an Arithmetic MeanTherefore, the mean is a measure of central tendency and additionally it is the proper average when carrying out statistical analyses at ratio or interval levels.

Interpreting a mean

The mean could be annotated like 'M', 'X', a bar 'X' or Greek 'M'. The mean is interpreted as the average value within a dataset, even though, literally, it is the determined value which is the most equidistant from all others in the dataset. Therefore, the mean will not need to be one of the real values in the sample.

Properties of the mean

The mean is, probably, well-known measure of central tendency and it is employed often, even when better measures are accessible. This is why you usually find outcomes such as that a population growth is 1.3 children for each couple each year. We may understand the meaning however the interpretation is, nonetheless, unrealistic.

As the mean is one of the most equidistant value to all other values within the data set, it is very sensitive to extreme values once the data set is skewed, to the point of outcomes becoming ridiculous.

Average Arithmetic Mean

Arithmetic mean is commonly known as average. Mean or Average is described as the amount of all the provided elements divided from the total number of elements.


Mean = amount of elements / number of elements

= a1+a2+a3+.....+an/n

Example: To locate the mean of 3,5,7.

Step 1: Find the amount of the numbers.

3+5+7 = 15 

Step 2: Determine the total number.

you can find 3 numbers.

Step 3: Finding mean.

15/3 = 5

Additionally to statistics and mathematics, the average arithmetic mean is utilized frequently in fields including sociology, economics and history, and it is employed in nearly every academic field to several extent. For example, per capita income is actually the arithmetic average income of a country's population.

Even though the average arithmetic mean is usually used to report central tendencies, it is not a robust statistic, which means that it is greatly affected by outliers (values that are greatly larger or smaller compared to most of the values).

How to Find the Arithmetic Mean

The arithmetic mean is frequently referred to as average. You find it by adding up all of the numbers in the set and dividing from the number of numbers. So if you can find 5 numbers in the set, you add them up and divide by 5.

Why to calculate and use mean

Whenever you have a set of data, it is occasionally hard to tell what the values are in general (you cannot see the forest for the trees). For instance, you have 10 stocks. Their yearly returns in the previous year were: 11%, -5%, 17%, 1%, -9%, 21%, 4%, -6%, 7%, and -1%. 

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