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A census can greatly decrease nonsampling error.
Interval
A range of values in statistics that describes the difference between two points, often used in the classification of scales of measurement.
Random Variable
A variable whose values depend on outcomes of a random phenomenon, with each outcome associated with a different value or set of values.
Occurrences
The instances or times that something happens or arises; the frequency of events.
Expected Value
The anticipated value or mean outcome of a variable, calculated as the sum of all possible values each multiplied by its probability of occurrence.
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