A control chart that uses the actual number of defects per item to monitor a process is known as a
A)p-chart
B)c-chart
C)R-chart
D)-chart

Question

A control chart that uses the actual number of defects per item to monitor a process is known as a
A)p-chart 
B)c-chart 
C)R-chart 
D)-chart

Quizplus · Accepted Answer

A c-chart is used when the number of defects in a sample is counted and charted in relation to the size of the sample. This chart is used to monitor processes that produce a large number of small units of output, such as electronic components or food items. The chart is used to identify when the number of defects in the sample is outside of the expected range and to identify the causes of these defects. The p-chart, on the other hand, is used when the proportion of defective items in a sample is charted, which is not suitable for some processes. The R-chart is used to monitor the variation within a sample, and the 11ea8b1d_2037_2ad0_b2e9_4b26ee24b863_TB5643_11-chart is not a valid control chart type.

A Control Chart That Uses the Actual Number of Defects