
189Chapter eleven: LSS process, steps, tools, and statistics
Attributes and variable chart contribute to benets of using this predictive tool that is
effective for continuous change efforts too. These benets can be translated to prots and it
is found that the cost incurred for data collection personnel training investigation and cor-
rection duly compensate. The efciency of control charting is determined by appropriate
selection of process parameters that are to be controlled. These variables can be identied
using DOEs and analysis of variance such as Pareto analysis and subgrouping.
These critical variables are thus named as key proces