Data isn’t everything. But it’s perhaps the main thing standing between you and a successful project. Continuous improvement takes effort, but more than anything, it takes solid information and analysis. In other words, wouldn’t it be more helpful to use statistical process control to find out where your process is going wrong, rather than just a hunch?
Decisions based on data are more likely to succeed than gut feelings. Box and whisker plots, control charts, histograms, and design of experiments (DOE) all can help improve data analysis.