Examlex
Unstructured problems are fuzzy, complex problems for which there are no cut-and-dried solutions.
Population Mean
The average value of a population's characteristic, calculated by summing all values and dividing by the population size.
Population Proportion
The fraction of a population that possesses a particular attribute or characteristic.
Margin of Error
A measure indicating the level of random sampling error present in the findings of a survey.
Confidence Interval
A set of numbers, coming from the statistics of a sample, which probably includes the value of a parameter from a population that is not known.
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