Average of Numbers Calculator
Average Calculator
Average Calculator
Separate numbers with commas. Spaces are optional.
The average calculator finds the arithmetic mean of any set of numbers. Enter your values separated by commas or line breaks and get the sum, count, and mean instantly. It also shows the minimum, maximum, and range so you can understand your data at a glance.
How to Calculate the Average
Add all values together, then divide by the count of values. This gives the arithmetic mean, the most common type of average. The result represents the central value of your dataset assuming equal weight for each number.
Mean = Sum of all values / Count of values
Types of Averages
The arithmetic mean works well for most datasets. The median (middle value) is better when outliers skew the mean. The mode (most frequent value) suits categorical data. For financial returns, the geometric mean gives a more accurate picture. This calculator computes the arithmetic mean.
Frequently Asked Questions
What is the difference between mean and average?⌄
Mean and average refer to the same calculation in everyday use: sum divided by count. In statistics, mean is the precise term and there are several types including arithmetic, geometric, and harmonic means.
How do outliers affect the average?⌄
A single very large or very small value pulls the arithmetic mean toward it. For example, adding one $1,000,000 salary to a group of $50,000 salaries dramatically raises the mean but does not represent most earners. The median is more resistant to outliers.
Can I average percentages?⌄
Averaging percentages can be misleading if the underlying group sizes differ. For example, a 50% rate from 10 people and a 50% rate from 1,000 people should not be averaged equally. Weight each percentage by its sample size for an accurate overall rate.