This plugin hasn’t been tested with the latest 3 major releases of WordPress. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.

Critical Value Calculator


Critical Value Calculator is a free calculator plugin that enables you to calculate critical value of Z, T, Chi-square, F and R at one click. You don’t have to search through hundreds of values ​​in t-table or z-table because this critical value calculator calculates ​​in real-time.


  1. Through this plugin users on your website can find following critical values:

    • T critical value
    • Z critical value
    • Chi-square critical value
    • F critical value
    • R critical value
  2. You can also change the calculator’s theme color from admin panel.

  3. It is very easy to use, You just have to use shortcode [critical-value] to show the calculator on webpage.

Installation and Use

This section describes how to install and use this plugin on your dashboard.

  • Upload the plugin files to your directory, or install the plugin through the WordPress plugin directory and it is totally free.
  • Activate the plugin through ‘Plugins’ screen in the WordPress dashboard.
  • Now you can see the critical value calculator menu on wordpress admin dashboard.
  • To add it on front end you just have to add short code there [critical-value].

It’s not working

  • Step 1. Check if your Plugin is activated.
  • Step 2. Deactivate all plugins and reactivate critical value calculator.


  • Mcalculate T value area. screenshot-1.png
  • Result Area for T value. screenshot-2.png
  • calculate Z value area. screenshot-3.png
  • Result Area for Z value. screenshot-4.png
  • calculate chi-square value area. screenshot-5.png
  • Result Area for chi-square value. screenshot-6.png
  • calculate F value area. screenshot-7.png
  • Result Area for F value. screenshot-8.png
  • calculate R value area. screenshot-9.png
  • Result Area for R value. screenshot-10.png
  • Admin panel setting to change theme color. screenshot-11.png
  • Short code of calculator. screenshot-12.png


There are no reviews for this plugin.

Contributors & Developers

“Critical Value Calculator” is open source software. The following people have contributed to this plugin.