Tukey Q Calculator
This tool will calculate critical values (Q_{.05} and Q_{.01}) for the Studentized range distribution statistic (Q), normally used in the calculation of Tukey's HSD.
The calculator is easy to use. Just input the number of groups in your study (k) in the first box, and degrees of freedom (normally the total number of subjects minus the number of groups) in the second box. Obviously, both these values need to be integers. That's all there is to it - just press the calculate button once you're ready.
The Calculator
Please enter your data above. Remember, both values must be integers.