Statistics • Central Tendency
Mean, Median, Mode & Range Calculator
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Mean
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Median
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Mode
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Range
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Enter a list of numbers and instantly get the mean (average), median (middle value), mode (most frequent value), and range (spread between highest and lowest) — the four most common measures used to summarize a data set.
Mean: add all values together and divide by how many values there are.
Median: sort the values and take the middle one (or the average of the two middle values if there's an even count).
Mode: the value or values that appear most often in the data set. A data set can have one mode, multiple modes, or no mode at all if every value appears equally often.
Range: the highest value minus the lowest value, showing how spread out the data is.
Median is more resistant to outliers than mean. For skewed data — like household income, where a few very high earners pull the average up — median often gives a more representative picture of a 'typical' value.
Yes. A set with two equally common values is called bimodal, and one with three or more is multimodal. If every value appears the same number of times, there is no mode.
A large range indicates high variability between the lowest and highest values, but it only looks at the two extremes — it doesn't describe how the rest of the data is distributed. Standard deviation gives a fuller picture of spread.