Defect Rate

Instructions: To calculate the number of samples you’ll need to verify, enter the percent confidence desired in the first input box. Then enter the defect rate in the next input box. The total number of samples needed is shown in the results below.

样本数计算器

Instructions: To calculate the defect rate of your product, enter the percent confidence in the first input box, then enter the number of samples you’ll be testing in the next input box. The defect rate will be shown in the results below.

Failure Rate Calculator