Lesson: Types of Data Mathematics

In this lesson, we will learn how to distinguish between categorical and quantitative variables.

Lesson Plan

Students will be able to

distinguish between quantitative (or numerical) and qualitative (or categorical) variables,
determine whether a given quantitative variable is discrete or continuous,
identify upper- and lower-class boundaries, the class midpoint, and the class width when given a grouped frequency table.

Lesson Worksheet

Q1:

Which of the following is not an example of a discrete variable?

Q2:

What type of variable is a person’s weight in kilograms?

Q3:

A researcher is measuring the time in seconds for athletes to complete a race. They want to write their data into a grouped frequency table where the width of each class is 1.5 seconds and the first class starts at 7.5 seconds. What are the class boundaries for the fourth class in this grouped frequency table?