This is an accurate box and whiskers plot calculator. It might be the only accurate box and whiskers calculator one on the Internet. All the others that I have come across contain calculation errors, even with a simple set of numbers such as 1,1,2,2,3,3,4,4. Mainly they are unable to calculate the quartile values correctly. This calculator calculates all the values accurately.
To use this box and whiskers calculator, simply enter a group of numbers into the text box and click ‘Submit’. The group of numbers can be either comma separated or space separated. Maybe even a mix of both.