Statistical Process Control Charts

question 220

Multiple Choice

Statistical process control charts:

• A) display the measurements on every item being produced.
• B) display upper and lower limits for process variables or attributes and signal when a process is no longer in control.
• C) indicate to the process operator the average outgoing quality of each lot.
• D) indicate to the operator the true quality of material leaving the process.
• E) are a graphic way of classifying problems by their level of importance, often referred to as the 80-20 rule.

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Definitions:

Columnar Joint

A geological structure where molten rock cools and contracts to form a pattern of polygonal columns, typically hexagonal in cross-section.

Slate

A fine-grained, foliated metamorphic rock derived from shale, characterized by its ability to split into thin, durable layers, commonly used in roofing and flooring.

Fault Scarp

A step in the landscape caused when fault movement offsets Earth’s surface.

Columnar Joints

Distinctive polygonal shapes formed in volcanic rock due to contraction as it cools, creating pillar-like formations.