
What is arithmetic mean?
Arithmetic mean, also known as the average, is a fundamental concept in mathematics and statistics. It is a measure that summarizes a set of numerical values by calculating their sum and dividing it by the total number of values.
To compute the arithmetic mean, you add up all the values in the set and then divide the sum by the count of values. The formula for arithmetic mean can be expressed as:
Arithmetic Mean = (Sum of all values) / (Number of values)
For example, consider the set of numbers {2, 5, 8, 11, 14}. To find the arithmetic mean, you add up all the values (2 + 5 + 8 + 11 + 14 = 40) and then divide by the total count of values (5 in this case). Therefore, the arithmetic mean of this set is 40/5 = 8.
The arithmetic mean is widely used in various fields, such as mathematics, statistics, economics, and everyday life. It provides a simple way to summarize data and obtain a representative value that reflects the “typical” or “average” value in a dataset.
It’s important to note that the arithmetic mean can be influenced by extreme values, often referred to as outliers. These outliers can significantly impact the mean value, making it less representative in certain situations. In such cases, other measures like the median or trimmed mean may be more appropriate.

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