qdist(alpha,K,v)

Version 1.0.0.0 (18.2 KB) by Richard McCulloch
qdist returns a value from the studentized range or q-distribution.
1.0
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462 Downloads
Updated 24 Jan 2015

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This function returns the table lookup value of the Studentized Range or q-distribution for Tukey HSD Post-Hoc means comparison. It has a maximum of 20 groups (K). If more groups are used K=20 is used for the table lookup.

Input:
alpha = Confidence level
K = Number of groups
v = Degrees of freedom

Example:
q=qdist(0.10,5,15)
ans =
3.8280

q=qdist(0.05,5,15)
ans =
4.3670

q=qdist(0.01,5,15)
ans =
5.5560

Data for the tables was taken from
http://cse.niaes.affrc.go.jp/miwa/probcalc/s-range/

Cite As

Richard McCulloch (2024). qdist(alpha,K,v) (https://www.mathworks.com/matlabcentral/fileexchange/49144-qdist-alpha-k-v), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2011a
Compatible with any release
Platform Compatibility
Windows macOS Linux

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Version Published Release Notes
1.0.0.0