Examlex
In the opening vignette, the CERN Data Aggregation System (DAS), built on MongoDB (a Big Data management infrastructure), used relational database technology.
Ratio
A mathematical relationship between two numbers indicating how many times the first number contains the second.
Interval
A range of values between two points, often used in reference to scales in measurements.
True Zero Point
In measurement scales, a true zero point indicates the absence of the quantity being measured, allowing for ratios to be meaningfully calculated.
Interval Level Variables
Interval level variables are a type of quantitative data where the intervals between values are meaningful, but the data lack a true zero point, allowing for the measurement of difference but not ratio.
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