Chi2 R. An R tutorial on the Chi-squared distribution. Is the amplitude of the Cosmic Microwave Background CMB correctly predicted or just its spectral shape.
For our example lets reuse the dataset introduced in the article Descriptive statistics in R. Chi-Square test is a statistical method to determine if two categorical variables have a significant correlation between them. Two random variables x and y are called independent if the probability distribution of one variable is not affected by the presence of another.
The null hypothesis of the independence assumption.
An R tutorial on the Chi-squared distribution. Each attribute is sorted according to its values. Both those variables should be from same population and they should be categorical like YesNo MaleFemale RedGreen etc. This article describes the basics of chi-square test and provides practical examples using R software.
