With a Hyphenated Instrument Such as GC-MS, the GC Serves

question 2

Multiple Choice

With a hyphenated instrument such as GC-MS, the GC serves to

• A) detect the compounds electronically
• B) pre-separate analytes so that they enter the detector one at a time
• C) ensure that the carrier gas is pure when entering the MS
• D) ionize the analytes for characterization by MS
• E) none of the above

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Definitions:

Coefficient Alpha

A statistical measure used to assess the reliability or internal consistency of a test or scale.

Kuder-Richardson

A set of formulas used to assess the reliability of binary (e.g., true/false, yes/no) scored tests or items within tests.

Low Validity

refers to the situation where a test does not accurately measure what it is supposed to measure, indicating a weak relationship between test scores and the intended construct.

Item Characteristic Curve

A graphical representation that shows the probability of a respondent answering a test item correctly at different levels of ability.