The data collection can be made transparent to an operator allowing the operator to focus on other tasks. Process variations and and out of control conditions can be quickly detected so that corrective measures can be performed. Histograms - display the data in a bar chart format showing the number of samples that were collected at a specific value. The bell curve displays the spread of the measurements with respect to the target value and the specification limits.
Histograms provide good graphical indication of system repeatability and control conditions.
Pareto Charts - display data in a bar chart format sorted in descending order, with the most frequent occurring problems displayed first. Pareto charts are excellent tools for targeting quality problems collected during inspections of parts or finished products.