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Critical Value Calculators

Tired of looking up critical values in tables? Use Dr. Weiss' Critical Value Calculator and never have to look up critical values again!

Directions for Use:

  • Select the type of critical value you want from the tabs along the bottom of the calculator (Z-crit, t-crit, F-crit, or chi-square).
  • Enter values in yellow cells.
  • Click ENTER on your keyboard.

How to Cite This Calculator:
Weiss, B.A. (2011). Critical value calculator [Computer software]. Available from

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