Cramer's V : Association of Categorical Variables

• For two numerical variables, we use Pearson's correlation to measure the strength of the relationship between the variables.
• Cramer's V is something equivalent to Pearson's correlation when we deal with two categorical variables.

• Number of rows/columns indicates the number of levels of the variables.

(example)
A company owns two gaiming apps P1 and P2. It is trying to determine if education has a significant impact on the type of app that users perfer to use.

Specifically differentiating between individuals with a technical (Tech) and non-technical(Non-tect) educational background. Using the data provided, conduct a test at 5% level of significance.