Numerical variables

Definition

Numerical variables are quantitative data that represent measurable quantities. They can be either discrete or continuous.

5 Must Know Facts For Your Next Test

1. Numerical variables can be divided into discrete and continuous types.
2. Discrete numerical variables represent countable quantities, like the number of students in a class.
3. Continuous numerical variables represent measurable quantities that can take any value within a range, like height or temperature.
4. Operations such as addition, subtraction, mean, and standard deviation are meaningful for numerical variables.
5. Graphical representations such as histograms, box plots, and scatter plots are often used to display numerical data.

Review Questions

Related terms

Discrete Variable: A type of numerical variable that represents countable quantities with finite values.

Continuous Variable: A type of numerical variable that represents measurable quantities which can take any value within a given range.

Categorical Variable:

Variables that represent categories or groups and cannot be measured quantitatively.