ISA CAP Quality Assurance & Improvement 2

Question 1

Which statistical tool is used to separate the 'vital few' causes from the 'trivial many' in a quality improvement effort?

Accepted Answer

Pareto chart

Answer

A Pareto chart ranks causes by frequency or impact, highlighting the vital few causes responsible for most defects.

Question 2

What does Cp measure in process capability analysis?

Accepted Answer

Potential capability assuming the process is centered

Answer

Cp measures potential process capability by comparing the specification width to the process spread, assuming the process is centered.

Question 3

A control chart shows a run of 8 consecutive points on one side of the centerline. This pattern indicates:

Accepted Answer

A non-random signal suggesting a process shift

Answer

Eight or more consecutive points on one side of the centerline is a Western Electric run rule violation indicating a likely process shift.

Question 4

Which quality improvement methodology follows the DMAIC cycle?

Accepted Answer

Six Sigma

Answer

Six Sigma uses the DMAIC (Define, Measure, Analyze, Improve, Control) cycle as its core problem-solving framework.

Question 5

In a measurement system analysis (MSA), 'reproducibility' refers to:

Accepted Answer

Variation between different operators measuring the same part

Answer

Reproducibility captures the variation in measurements taken by different operators using the same gauge on the same parts.

(ISA CAP) ISA Certified Automation Professional Practice Test