This page, which is also called as SPC, is We usually use mainly 2 methods to control the quality,
- The first one is to inspect the unit to check the quality whether it is good or not. But this method has a lot of drawbacks, one of those is that the cost may be too high.
- The second is called the prevention approach, this method has an advantage is that could be previous than the production, using the Hypothesis test, and this method not inspect the production itself, but inspect the process to predict when will be the bad production happen.
One of the most important part of the quality control, would be Process Variation
However, the SPC process is slightly different from the Hypothesis test.
我的想法
小小的样本数据居然可以通过不同的处理方式玩出花来，太神奇了