• Imagine buying a brand-new shirt and finding a stain on it. Ew, right? Or spotting a scary nail sticking out of your new picture frame. That's what we call a "defect"!

• Defect = A fault or issue with a product made during its creation.

• Defective products can't be sold (who'd buy that stained shirt?). They're usually trashed.

• The defect rate tells us what portion of products end up with these pesky issues.

Defect Rate =\(\biggl(\frac{number \,of\, defective\, units}{total\, output}\biggl) ​ \)× 100

👉 The LOWER the defect rate, the HAPPIER we are! It's like a game where we aim for the lowest score possible.

🌍 Real-World Example

Imagine a toy factory that produces 1,000 toys, but 20 of them have missing parts. The defect rate is

\((\frac{20}{1000})\) × 100 = 2%

• Shows areas needing better quality control. Aim is to lower the score, like getting your golf game on point! Ideal score = 0% (a dream, right?).

​​​​🚀 Productivity Rate (again, for the awesome HL peeps)