Before classifying the data as qualitative or quantitative, let's recall the definitions of these classifications.
Types of Data
Description
Can It Be Measured?
Qualitative
Describes a category and cannot be measured or numerically compared.
Quantitative
Has units and can be measured and numerically compared.
Let's now consider our data set.
street addresses in a phone book
Street addresses are nonnumerical entries that can be separated into different categories. It does not make sense to measure or numerically compare them. Therefore, the data are qualitative.
