Critical Chi-Square Value Calculator. This calculator will tell you the critical Chi-square (Χ 2) value associated with a given (right-tail) probability level and the degrees of freedom. Please enter the necessary parameter values, and then click 'Calculate'. Chi Square Calculator for 2x2 This simple chi-square calculator tests for association between two categorical variables - for example, sex (males and females) and smoking habit (smoker and non-smoker).

This calculator compares observed and expected frequencies with the chi-square test. Read an example with explanation .
Note that the chi-square test is more commonly used in a very different situation -- to analyze a contingency table. Total war rome cheats for mac. This is appropriate when you wish to compare two or more groups, and the outcome variable is categorical. For example, compare number of patients with postoperative infections after two kinds of operations. If you need to analyze a contingency table, do not use this table. If you have two groups (rows) and two outcomes, use this calculator . If your table is larger, try the free demos of GraphPad InStat (basic statistics only) and GraphPad Prism (statistics, nonlinear regression and scientific graphics).
Enter the names of the categories into the first column (optional). Enter the actual number of objects or individuals or events observed in the second column. Then enter the expected number, fraction or percent expected in the third column.

Easy Chi Squared Calculator

How To Calculate Chi Square Statistic

Analyze, graph and present your scientific work easily with GraphPad Prism. No coding required. Professional software for mac.