Which statement best differentiates quality assurance from quality control?

Which statement best differentiates quality assurance from quality control?

• A. QA focuses on improving processes to prevent defects; QC focuses on identifying defects in the final product
• B. QA tests the final product; QC designs the process
• C. QA is for manufacturing; QC is for services
• D. QA and QC are the same

Answer: (A)

The main idea is the difference between prevention and detection in quality work. Quality assurance focuses on shaping and improving the way work is done so defects are prevented in the first place. Quality control focuses on checking the finished product to identify defects after it’s produced. This is why the statement that QA aims to improve processes to prevent defects, while QC aims to identify defects in the final product, is best. In practice, QA involves establishing standards, processes, training, and continuous improvement to keep defects from happening. QC involves inspecting and testing outputs to find defects, so they can be addressed before delivery. Think of QA as building quality into how work is done, and QC as verifying that the finished work meets the required quality.

The main idea is the difference between prevention and detection in quality work. Quality assurance focuses on shaping and improving the way work is done so defects are prevented in the first place. Quality control focuses on checking the finished product to identify defects after it’s produced.

This is why the statement that QA aims to improve processes to prevent defects, while QC aims to identify defects in the final product, is best. In practice, QA involves establishing standards, processes, training, and continuous improvement to keep defects from happening. QC involves inspecting and testing outputs to find defects, so they can be addressed before delivery.

Think of QA as building quality into how work is done, and QC as verifying that the finished work meets the required quality.