Mean (Average) Calculator
Compute the arithmetic mean of a list of numbers.
Result
Arithmetic mean of 7 values
12.571429
Range: 5 … 22.
- Sum88
- Count7
- Min5
- Max22
- Range17
Arithmetic mean
Sum ÷ count. Sensitive to outliers.
12.571429
Median
Middle value when sorted; robust against outliers and skew.
12
Geometric mean
nth root of product; right for averaging ratios / multiplicative growth.
11.123195
Range
Quick spread indicator; standard-deviation gives a rigorous spread.
17
Note — Mean is appropriate for symmetric, outlier-free data. Use median for skewed distributions (income, home prices); geometric mean for compounded ratios (returns, growth rates).
Step-by-step
- Sum: 8 + 12 + 15 + 7 + 19 + 22 + 5 = 88.
- Divide by count (7): 88 ÷ 7 = 12.571429.
How to use this calculator
- Paste numbers separated by commas, spaces, or newlines.
- Read the mean and supporting stats.
About this calculator
The arithmetic mean — sum divided by count — is the most familiar "average". It's the right choice for normally distributed data and homogeneous quantities. For skewed data, the median (the middle value) is usually more representative; for ratios over time, the geometric mean can be appropriate. Use mean for "average test score, average rainfall, average temperature".
Frequently asked
When the data has outliers or is heavily skewed (income, house prices). The median is robust against extreme values.
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