In production lines, rejecting a product that is technically good represents one of the most dangerous and underestimated wastes: the false positive. This type of error does not directly compromise the quality perceived by the customer, but seriously affects the efficiency, productivity, cost, and confidence in the tests. The incorrect
The Pareto chart is a statistical tool used to identify and prioritize the main causes of failures in a process. It is based on the Pareto Principle (80/20), which states that about 80% of problems come from 20% of causes. When applied to test engineering and production, the Pareto allows
The FPY (First Pass Yield), or First Pass Yield, is a fundamental indicator of efficiency and quality of a testing or production process. It measures the percentage of units that pass the test on the first attempt, without the need for rework, repetition, or correction. Why is FPY important? FPY