Categorical and Quantitative Variables

Front

What is a categorical variable?

Back

A categorical variable is a type of variable that can take on one of a limited, fixed number of possible values, assigning each individual or other unit of observation to a particular group or nominal category based on a qualitative property.

Front

What is a quantitative variable?

Back

A quantitative variable is a type of variable that can be measured numerically and can take on an infinite number of values within a given range, allowing for mathematical operations.

Front

Give an example of a categorical variable.

Back

Favorite color, type of vehicle, or marital status.

Front

Give an example of a quantitative variable.

Back

Height, weight, or age.

Front

What type of data is represented by the question 'How many siblings do you have?'

Back

Quantitative.

Front

What type of data is represented by the question 'What's your favorite subject in school?'

Back

Categorical.

Front

What is the difference between nominal and ordinal categorical variables?

Back

Nominal variables have no inherent order (e.g., gender, race), while ordinal variables have a clear ordering (e.g., satisfaction ratings: satisfied, neutral, dissatisfied).

Front

What is an example of ordinal data?

Back

Survey responses rated as 'poor', 'fair', 'good', 'excellent'.

Front

What is an example of nominal data?

Back

Types of fruits: apple, banana, orange.

Front

How can quantitative data be further classified?

Back

Quantitative data can be classified into discrete (countable values) and continuous (infinite values within a range) data.