Examlex
The optimal level of consumption occurs where the marginal rate of substitution is greater than the sum of the relative price and the consumer has spent all his or hers income.
Simple Random Sample
A portion of a statistical group where every member has the same chance of selection.
Random
Lacking pattern, purpose, or predictability, often used in the context of selecting items or events in a way that each has an equal chance of being chosen.
Average Age
The mean value of the ages of individuals in a particular group, calculated by summing their ages and dividing by the number of individuals.
Sampling Frame
The list or database from which a sample is drawn for a study, containing all the elements that define the population.
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