batch standard deviation versus batch mean, and each dot on each panel represents a batch with a true standard deviation and mean as merited by its placement on this panel. The upper two panels are for the FDA test, the lower panels are for the PTI test. Panels on the left are for batches. It's the quality of the batches that were accepted by the test. The panels on the right depicts the quality of the batches that were rejected by the test. As you can see, the batch mean and standard deviation vary here, and they vary approximately for the batch mean between a 100 plus/minus 14 percent label claim, for the batch standard deviation approximately 20 plus/minus 3 percent standard deviation.
The take-home message on this plot is that with this unacceptable quality, the FDA test and the PTI test do a good job of rejecting the absolute majority of these batches, and this just further illustrates my point that the PTI test achieves the goal to maintain consumer protection.
The next panel here, which is also a very important slide, shows the case for acceptable quality. So you can see here from the left panels that with the FDA