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Which variables in a survey of age, income, gender, and marital status are quantitative?
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statistics
Figure 1: A bar graph showing the marital status of 100 individuals.
In the context of statistics, variables are classified as either quantitative or qualitative based on the nature of the data they represent.
Among the variables listed, the quantitative variables are:
- Age: This is a quantitative variable because it measures how many years an individual has lived.1
- Income: This is a quantitative variable because it measures how much money an individual earns.1
In contrast, gender and marital status are considered qualitative variables. These provide labels or names for categories—such as male and female for gender, or single, married, divorced, and widowed for marital status—rather than numerical measurements of quantity.1