1. Which of the following statements is false regarding categorical input variables and cardinality?

[zahidhasandipu]

1. Which of the following statements is false regarding categorical input variables and cardinality?

a. Cardinality is the number of distinct levels in a categorical variable.

b. Categorical variables with high cardinality can lead to overfitting in a predictive model.

c. Calculating cardinality is an important exploratory tool before transforming the categorical input.

d. Categorical variables with a low cardinality ratio have more distinct levels than variables with a high cardinality ratio.

e. All are false. 

[Astounding]

I would suggest you google "cardinality" and "cardinality ratio" so you understand what those terms mean.

[Oti]

d