Numerical data is numbers. Non-numerical data is anything else.
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The range is the difference between the greatest and least numbers.
The mode.
A statistic is a number or a fraction or any form of numerical data. A fact is an accepted theory or idea that can be proven.
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.
A number that describes numerical data is a Statistic.