Quantitative data is any data that is in numerical form. It is often compared to qualitative data that includes information expressed in a natural language such as English or Japanese. The following are common types of quantitative data.
MeasurementsA measurement of something physical. For example, a food safety inspection that measures the temperature of food stored in a restaurant refrigerator.
SensorsSensors are devices that automatically measure the physical world to create streams of data. For example, a digital camera turns electromagnetic radiation into a series of numbers using a color model.
CountsCounting things. For example, a train station that counts the number of passengers who enter the station in real time.Converting qualitative human judgements into numbers. For example, asking customers to rate their satisfaction on a scale of 1 to 4.
CalculationsMathematical calculations such as calculating gross margin based on monthly sales figures.
EstimatesProducing numerical estimates as opposed to exact calculations using algorithms, artificial intelligence, business rules or human judgement. For example, a garbage sorting robot may estimate the probability that a particular object is recyclable plastic.
PredictionsPredictions produced by algorithms, artificial intelligence or people. For example, a stock analyst may predict the future revenue and net earnings of a company.
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