Understanding the Arithmetic Mean

The arithmetic mean (average) is a fundamental statistical measure used to find the central tendency of a dataset. It's calculated by summing all values and dividing by the count of values. This calculator provides instant results for any numerical dataset, making it ideal for homework, research, and data analysis.

Step-by-Step Guide

Enter numbers separated by commas or spaces in the input field
Click "Calculate Mean" to compute the result
Use the precision dropdown to control decimal rounding
Results show the count, sum, and calculated mean

Practical Examples

Example 1: Test scores: 85, 92, 78, 90, 88

Sum = 433, Count = 5, Mean = 86.6

Example 2: Temperature readings: -2.5, 3.1, 0, 7.8, -1.2

Sum = 7.2, Count = 5, Mean = 1.44

Reference Table

Dataset Type	Mean Interpretation
Normal Distribution	Central peak value
Skewed Distribution	Pulled toward extreme values
Uniform Distribution	Midpoint of range

Frequently Asked Questions

What number formats are supported?

Integers, decimals (both dot and comma notation), and negative numbers. Scientific notation is not supported.

How are decimal values handled?

Values are parsed as floating-point numbers. The precision control determines how many decimal places to show in the result.

What if I enter non-numeric values?

Non-numeric entries are ignored during calculation. Only valid numbers are included in the mean computation.

Is there a limit to how many numbers I can enter?

No hard limit, but extremely large datasets may impact browser performance.

Average Mean Calculator

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