APICS Certified Supply Chain Professional (CSCP) — Question 425

A key concept distinguishing six sigma from lean manufacturing and just-in-time (JIT) concepts is:

Answer options

• A. reducing waste.
• B. eliminating inventories.
• C. keeping process variability within limits.
• D. designing quality into products and processes.

Correct answer: C

Explanation

The correct answer is C because six sigma focuses on controlling process variability to improve quality. In contrast, reducing waste (A) and eliminating inventories (B) are key components of lean manufacturing, while designing quality into products and processes (D) is a broader concept that can apply to various methodologies, not just six sigma.