The percentage of product damage is used to see the proportion of product damage that occurs in each subgroup (per month).
Information:
![Dok. pribadi](https://assets.kompasiana.com/items/album/2020/11/28/i-png-5fc1c562d541df78e77a1982.png?t=o&v=555)
Dok. pribadi
np: Number of mismatches in the subgroup
n: Number checked in subgroups
subgroup: month checked
2. Calculating Center Line (CL)
Center Line is the average non-conformity product (p-Bar).
![Dok. pribadi](https://assets.kompasiana.com/items/album/2020/11/28/2-png-5fc1c576d541df6a8b5a0f32.png?t=o&v=555)
Dok. pribadi
Sum np:The total number of non-conformities
Sum n:The total number checked
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