What this calculator does
Calculate the minimum, first quartile, median, third quartile, maximum, and interquartile range.
How it works
The calculator evaluates five-number summary = minimum, Q1, median, Q3, maximum after sorting the data. Inputs are checked before calculation, and invalid values such as zero denominators or out-of-range selections produce a clear error instead of a misleading result.
Input query strings and outputs
Use an input name in this page’s URL as ?name=value, and join additional inputs with &. Portable shared links may instead use the compact ?ac= state parameter.
Input query strings
1-
?data=Data values (comma or space separated)Text · Required · Default: 4, 7, 7, 9, 12, 15, 18, 21
Outputs
6-
minimumMinimumNumber
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q1First quartile Q1Number
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medianMedian Q2Number · Primary output
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q3Third quartile Q3Number
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maximumMaximumNumber
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iqrInterquartile rangeNumber
Inputs and results
The inputs are Data values (comma or space separated). Results include Minimum, First quartile Q1, Median Q2, Third quartile Q3, Maximum, Interquartile range.