SSDSI Blog Archives

Most Common Lean Six Sigma Interview Questions (With Answers)

Employers who hire for process improvement roles test candidates on three things. They test technical knowledge of Six Sigma tools. They test practical experience applying DMAIC. And they test how candidates think when facing a real process problem. This article...

How Ford Motor Company Uses Six Sigma and the Ford Production System

Ford Motor Company has built and sold vehicles for more than 120 years. It employs approximately 177,000 people across the globe. It operates manufacturing plants, assembly facilities, and engineering centers across multiple continents. At that scale, quality is not...

How Difficult Is the Lean Six Sigma Exam? What the Facts Show by Belt Level

The Lean Six Sigma exam ranges from moderately to significantly challenging, depending on belt level and certifying body. The IASSC Black Belt is a 150-question, closed-book, proctored exam with a 70% minimum passing score. The ASQ Black Belt contains 150 to 165...

Micromachining: What It Is, How It Works, and Why Quality Control Matters

Modern devices keep shrinking. Smartphones, cardiac stents, satellite sensors, and automotive airbag triggers all share one common thread. They all contain components measured in micrometers. Micromachining produces those components. It creates features and parts at a...

How Six Sigma Principles Align with BAE Systems’ Quality Approach

BAE Systems builds some of the world’s most advanced defence and security solutions. The company employs approximately 90,500 skilled people across more than 40 countries. It develops, engineers, manufactures, and supports products across air, land, sea, space,...

Which Country Values Lean Six Sigma Certification the Most?

The United States offers the highest salaries for Lean Six Sigma certified professionals, with Black Belts averaging $169,742 per year (Glassdoor, April 2026). India shows the fastest growth in demand, driven by government-backed manufacturing initiatives and major...