The Following Problem Involves Some Factoring by Grouping

question 134

Essay

The following problem involves some factoring by grouping. Remember, before you can divide out factors common to the numerator and denominator of a product, you must factor completely.

---

Definitions:

Non-disturbed Samples

Samples collected from natural or unchanged settings or populations, maintaining their original conditions without human-induced alteration or manipulation.

Face Validity

The extent to which a test appears to measure what it's supposed to measure, based on subjective judgment.

Content Validity

When the content of a test includes a representative sample of behaviours thought to be related to the construct (that is, the concept or entity) the test is designed to measure.

Representative Sample

A portion of the population that represents the entire group accurately.