Chapter 14 - Statistical Process Control

pattern

There is a(n) ________, trend, or cycle that is obviously not random.

Upper

________ and lower control limits are totally unrelated to any process specifications that may have been decreed by the manufacturer.

data values

A run chart is a sequential plot of individual ________ over time.

Process data

________ are data arranged according to some time sequence.

Q bar

________= estimate of the proportion of process items that are not defective= 1- p hat.

Process data

 __________ are data arranged according to some time sequence. They are measurements of a characteristic of goods/services that result from some combination of equipment, people, materials, and conditions.

Random variation

____________ is due to chance, it is the type of variation inherent in any process that is not capable of producing every good or service exactly the same way each time

natural variation

A process is statistically stable (or within statistical control) if it has only ____________, with no pattern, cycles, or unusual points

run chart

A _________  is a sequential plot of individual data values over time. One axis (usually the vertical axis) is used for the data values, and the other axis (usually the horizontal axis) is used for the time sequence.