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The formula calculates the number of defective units based on reliability percentage and total tested units. It provides a statistical estimate of defective items in a production batch or sample.
The calculator uses the formula:
Where:
Explanation: The formula calculates defective units by subtracting the reliability percentage from 100% to get the defect rate, then applies this rate to the total tested units.
Details: Calculating defective units is crucial for quality control, production efficiency analysis, and determining product reliability in manufacturing processes.
Tips: Enter reliability number as a percentage (0-100) and the number of tested units. Both values must be valid positive numbers.
Q1: What does the Reliability Number represent?
A: The Reliability Number represents the overall consistency and quality percentage of the tested units, indicating what percentage of units are expected to be non-defective.
Q2: How accurate is this calculation?
A: This calculation provides a statistical estimate based on the reliability percentage. Actual results may vary depending on sample representativeness and testing methods.
Q3: Can this formula be used for any production batch size?
A: Yes, the formula can be applied to any batch size as long as the reliability percentage accurately represents the quality level of the production process.
Q4: What if my Reliability Number is 100%?
A: If Reliability Number is 100%, the calculation will result in 0 defective units, indicating perfect quality in the tested sample.
Q5: How should I interpret the results?
A: The result indicates the estimated number of defective units in your tested sample. Higher numbers suggest lower quality and may require process improvements.