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In statistics numerical data is quantitative rather than qualitative.
Numerical data is numbers. Non-numerical data is anything else.
The numerical average of a set of data is called x-bar. This is the sum of all values divided by the number of values.
Qualitative and quantitative data are both 2 important types of data. Qualitative data is data based on observation and description. An easy way to remember this, Qualitative ---> QUALity. Examples of qualitative data are when you record colors, smells, textures, etc... Quantitative data is based on numerical values. An easy way to remember this, Quantitative ---> QUANTity. An example of quantitative data are any type of numerical values.
Ratios ARE numerical.