Categorical Data

Multiple Select

Which of the following are types of categorical data?

• Nominal

• Ordinal

• Continuous

• Discrete

Multiple Select

Which of the following are types of numerical data?

• Nominal

• Ordinal

• Continuous

• Discrete

Multiple Choice

What kind of categorical data is level of education?
Primary School, Middle School, High School, University

• Nominal

• Ordinal

Multiple Choice

What kind of categorical data is nationality?
American, Chinese, Japanese, French, Russian

• Nominal

• Ordinal

Multiple Choice

What kind of categorical data is opinion?
Dislike, Neutral, Like, Love

• Nominal

• Ordinal

Multiple Choice

What's a dummy variable?

• A dummy variable is a continuous variable used for numerical data analysis.
• A dummy variable is a placeholder for missing data in datasets.
• A dummy variable is a type of categorical variable that measures time.

• A dummy variable is a 0-1 variable that represents categorical data.

Multiple Choice

Which of the following statements best describes one hot encoding?

• It converts categorical variables into multiple 0-1 columns.

• It replaces missing values with the mean.

• It normalizes numerical data to a range between 0 and 1.

• It combines multiple columns into a single column.