You establish a controlled variable from which you can compare your results from your experimental variables.
When performing an experiment it is very important to have a control set. It is important to have a control set because it ensures that the experiment can be repeated as many times as necessary.
If you do not have a control,then you cannot compare your test results.
so that it doesn't go out of control
free
what is group chart in quality control
relevance of du-pont control chart to the industry?
control it
u chart
I have seen this very question on a CQE practice test. The four possible answers were p chart, np chart, c chart and x and R chart. The first three charts are attribute charts and the last chart, x and R chart, is the only variables control chart. The only other possible answer could be x and s chart which tracks the standard deviation vs the range.
its important
The only variable that determines the width of the control limits of the averages portion of the x-bar R chart is the process variability, specifically the average range (R-bar) of the samples. The control limits are calculated using the average range to establish how much variation is expected in the process. Thus, as the average range increases, the control limits widen, reflecting greater variability in the process.
see
different between quality control & quality assurance
An embedded chart can be of any type. What makes it an embedded chart is the fact that it is embedded into a worksheet. The type of chart is not important, so it can be of any type.
How do you establish which cardholder accounts a specific accounting validation control (AVC) applies to
Format chart area