Purchasing Personnel Should Check the Reliability of Potential Suppliers as Well

question 175

True/False

Purchasing personnel should check the reliability of potential suppliers as well as suppliers' ability to meet delivery schedules.

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Definitions:

Test-retest Reliability

This refers to the consistency of scores on a test or assessment when the same individuals take the test again under similar conditions after a time interval.

Interquartile Range

Provides the range of the middle 50% of scores around the median. Because it eliminates the top and bottom quartiles, the quartile range is most useful with skewed curves because it offers a more representative picture of where a large percentage of the scores fall.

Internal Consistency

A method of determining reliability of an instrument by looking within the test itself, or not going “outside of the test” to determine a reliability estimate as is done with test-retest or parallel forms reliability. Some types of internal consistency reliability include split-half (or odd-even), Cronbach’s Coefficient Alpha, and Kuder-Richardson.

Licensure Exam

A standardized test that individuals must pass to obtain a license to practice in certain professions, ensuring they meet the required competency standards.