Find the first, second (median), and third quartiles of a data set.
How It Works
How Quartile Calculator Works
After sorting the data, quartiles mark the 25%, 50%, and 75% points through the list — Q2 is simply the median, while Q1 and Q3 mark the midpoints of the lower and upper halves respectively.
FAQ
Frequently Asked Questions
Why might different tools give slightly different quartile values for the same data?
There are several accepted methods for handling interpolation when a quartile falls between two data points — this calculator uses linear interpolation, a common method, but spreadsheet software and statistics packages sometimes default to a different one, producing small differences.
