Write the Word or Phrase That Best Completes Each Statement $$\frac { 7 x ^ { 3 } - 2 } { x ^ { 2 } ( x + 1 ) ^ { 3 } }$$

question 89

Essay

Write the word or phrase that best completes each statement or answers the question.
- $$\frac { 7 x ^ { 3 } - 2 } { x ^ { 2 } ( x + 1 ) ^ { 3 } }$$

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Definitions:

Biased Sample

A nonrepresentative sample.

Representative Sample

A small group representing a larger group in terms of age, sex, ethnicity, socioeconomic status, orientation, for example.

Multistage Sample

A sampling method involving multiple phases of selection, often used in large-scale surveys to efficiently gather data.

Stratified Sample

A sampling method used in research that involves dividing the population into distinct subgroups and selecting samples from each subgroup.