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Quantitative data involves numbers, either measurable or countable values. Qualitative data involves something descriptive like color or shape.
Quantitative measurements are those which involve the collection of numbers. It is the opposite of qualitative data which are observations. For example, if you were interested in looking at height. Quantitative measurements would be taking an accurate measurement of everyone. Qualitative data would be looking at the person and putting them into a category of 'tall,' 'medium,' 'short.'
Recorded observations and measurements from an experiment are referred to as data. The data can either be quantitative or qualitative.
measurements
Usually, when observations and measurements are aggregated, these are called DATA.