Enter the total number of rejections and the total number of units into the calculator to determine the rejection percentage.
Rejection Percentage Formula
The following formula is used to calculate a rejection percentage.
R% = TR / TU * 100
- Where R% is the rejection percentage
- TR is the total number of rejects
- TU is the total number of units
To calculate rejection percentage, divide the total number of rejects by the number of units in the lot, then multiply by 100.
What is a rejection percentage?
Definition:
A rejection percentage is a measure of the rate at which products are rejected on average. This rate is expressed as a ratio of rejects to sample size.
How to calculate rejection percentage?
Example Problem:
The following example problem outlines the steps and information required to calculate a rejection percentage.
First, determine the number of units in the sample size. In this example, we are looking at a sample of 4000 parts.
Next, determine the total number of rejects in the sample. In this case, there are 100 rejects.
Finally, calculate the rejection percentage using the formula above:
R% = TR / TU * 100
R% = 100/4000 * 100
R% = 2.5 %
