The main classification is discrete or continuous.
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A qualitative variable is a variable that has categorized values and the difference cannot be measured. A quantitative variable is a variable that consist of ordinary values and the difference can be measured. Depending on the type of class rank it can be both qualitative as quantitative.
'Distance' is quantitative, because it is a quantity.
Sales rank is a quantitative variable. The underlying value is sales, obviously a quantitative value. The median, minimum, maximum and percentile values are all quantitative statistics based on the ranking of data.
temperature
Qualitative for a car licenseQualitative for a favorite sportQualitative for a number of brothers