The monitoring performed by the quality control chart
, as in Figure 2, shows the variability existing between the types of water and lateral line slope in a temporal context.
We used a quality control chart
to determine the number of experiences required by an experienced laparoscopic gynecologist to achieve performance stability for the three different stages of robotic surgery.
The Quality Control Chart
module of the WinQSB software provides 21 types of graphs for variable data, 15 types of graphs for attributive data, histograms, Pareto analysis, curves of the operational characteristics etc (Mihalca et al., 2003).
The quality control chart
and cause-and-effect diagram were placed on the wall where team members who understand the process could ask questions and generate action items to define the root cause and create a process of continuous improvement.
The templates described in this article employ a pseudo-graphics technique for rapidly generating either a blank three-level Levey-Jennings quality control (QC) chart or a blank two-level Westgard quality control chart
on a single 8.5-by-11-inch sheet of paper.
It was hypothesized that linking the engineering part drawing to the statistical quality control chart
would result in a more useful and usable depiction of the state of the manufacturing process and its relationship to the physical features of the component, and that this depiction would enable the operator to make better quality control decisions in less time.
Statistical quality control charts
are useful in establishing process capability, so plant standards may be set for control variables, and upper and lower control limits may be applied.
Inspectors can instantly call up quality control charts
to be sure production is within control limits.
Data collected from 10 participants, 174 trials, and 23 performance measures were analyzed using 18 variations of three different quality control charts
. Additionally, the data represent performance under space microgravity or antihistamine conditions.
Squires, F.H., "What do quality control charts
control?", Quality, November 1982, p.