the degrees of freedom in the follow statistical statement χ2 (2, N = 67) = 6.72, p = .021
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
The Chi-square test is a test for categorical variables which determines whether there is a difference between population proportions between two or more groups.
Consider this case.
The value of Chi-square test statistic is given as:
χ2 (2, N = 67) = 6.72
Where N is the sample size, 2 is degrees of freedom, and 6.72 is the chi-square test statistic.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
