Chi-Squared Test
Use: The Chi-Squared test is used to determine if there's a significant association between two categorical variables. It helps assess whether there is a relationship between the variables or if they are independent.
Example: Investigating whether there is an association between gender (male or female) and the preference for a particular brand of soft drink.
Column Requirement: Categorical data for both variables.
Steps:
Select two categorical columns (e.g., gender)
Ensure expected frequencies in each cell of the table are not too low (generally above 5) for reliable results.
Compute the Chi-squared test statistic.
Evaluate the p-value associated with the test statistic.
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