How to classify Statistical Units in One - Minute

Опубликовано: 15 Октябрь 2024
на канале: Public Health Resources

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In statistics, a statistical unit is one member of a set of entities being studied. It is the main source for the mathematical abstraction of a “random variable”. Common examples of a unit would be a single person, animal, plant, manufactured item, or country that belongs to a larger collection of such entities being studied. Units are often referred to as being either experimental units, sampling units or units of observation1.
For example, in an experiment on educational methods, methods may be applied to classrooms of students. This would make the classroom as the experimental unit. Measurements of progress may be obtained from individual students, as observational units. But the treatment (teaching method) being applied to the class would not be applied independently to the individual students. Hence the student could not be regarded as the experimental unit. The class, or the teacher by method combination if the teacher had multiple classes, would be the appropriate experimental unit1.

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