The term quantitative, in science, means related to measurements, or measuring the quantity of something. This is opposed to "qualitative", which is related more to just observing aspects of something.
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In chemical analysis, the exact meaning of quantitative is relating to, measuring, or measured by the quantity of something rather than its quality.
Qualitative analysis (in analytical chemistry) is a method which can identify components of a material without specifying concentration.
Quantitative analysis in chemistry is a method of trying to figure out how much of a compound or element there is in a reaction. This is often expressed as a concentration.
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Qualitative has to do with quality and can be subjective. Quantitative has to do with quantity and is measured in numbers. Qualitative data deals with descriptions of what you can see, such as colors, smells, tastes, etc. It can be seen, but not measured. Quantitative data deals with numbers, such as length, height, area, volume, weight, speed, time, temperature, humidity, sound levels, cost, members, ages, etc.
quantitative mean amount of any thing in number.
Quantitative observation means that your description of what you observedincludes a definite number that you measured.For example:"I saw a really big guy." is not a quantitative observation."I saw a guy who is 8 feet tall." is a quantitative observation.
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