Mean, Median, Mode Calculator
How It Works
This mean, median, mode calculator uses established formulas to provide accurate results.
The basic rule:
- Mean = Sum of values / Number of values
- Median = Middle value of sorted data
- Mode = Most frequent value
- Range = Maximum - Minimum
Results are estimates. Consult a professional for critical decisions.
Frequently Asked Questions
What is the mean?
The mean (or average) is the sum of all values divided by the number of values. For example, the mean of 4, 8, and 6 is (4+8+6)/3 = 18/3 = 6.
What is the median?
The median is the middle value when numbers are sorted from least to greatest. If there is an even number of values, the median is the average of the two middle values.
What is the mode?
The mode is the value that appears most frequently in a data set. A set can have no mode (all values appear equally), one mode, or multiple modes.
What is the range?
The range is the difference between the highest and lowest values in a data set. It measures how spread out the data is. Range = Maximum - Minimum.
When should you use mean vs. median?
Use the mean for data without extreme outliers. Use the median when there are outliers, as the median is not affected by extremely high or low values. For example, incomes in a neighborhood are better described by median because a few very wealthy residents would skew the mean.