Statistics:Different Types of Data/Quantitative and Qualitative Data

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Quantitative and qualitative data are two types of data.

[edit] Qualitative data

Qualitative data -- measurement expressed not in terms of numbers, but rather by means of a natural language description. In statistics it is often used interchangably with "categorical" data.

  For example: favourite colour = "blue"
               height = "tall"

[edit] Quantitative data

Quantitative data --  measurement expressed not by means of a natural language description, but rather in terms of numbers.

  For example: favourite colour = "450 nm" 
               height = "1.8 m"

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