Average Calculator

Calculate the arithmetic mean (average), sum, count, minimum, and maximum of a set of numbers.

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How to Calculate an Average

The arithmetic mean (average) is calculated by adding all numbers together and dividing by the count. For example, the average of 85, 90, 78, 92, and 88 is (85 + 90 + 78 + 92 + 88) / 5 = 86.6. This is the most commonly used measure of central tendency.

Types of Averages

Besides the arithmetic mean, there are other types of averages. The weighted average assigns different importance to values. The geometric mean multiplies values and takes the nth root — useful for growth rates. The harmonic mean is used for rates and ratios. Each serves different analytical purposes.

When the Average Can Be Misleading

The average is sensitive to outliers. If most employees earn $50,000 but the CEO earns $5,000,000, the average salary will be misleadingly high. In such cases, the median (middle value) often gives a better picture of typical values in the dataset.

Practical Uses of Averages

Averages are used everywhere — calculating grade point averages, batting averages in sports, average temperature over time, average cost of goods, and investment returns. Understanding when and how to use averages is a fundamental skill in data literacy.

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