Understand the Purpose of Control Charts

Multiple Choice

Understand the purpose of control charts.
-Machine oil is used by clothing manufacturers to lubricate and protect sewing
Machines. A company that produces machine oil must ensure that the viscosity of its
Product meets customer requirements. Consequently, the viscosity of every batch of oil
Produced is measured. Suppose that the process mean is 101 cP and the process standard
Deviation is 1.50 cP. What type of chart should be used to ensure the process remains in
Control?

A) p-chart
B) c-chart
C) R-chart
D) Individuals chart
E) ARL chart