Question
Download Solution PDFWhich of the following is not a control chart for variables?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Control charts:
- Control chart is a graphical representation of the collected information.
- It indicates whether a process is in control or out of control.
- It determines process variability and detects unusual variations taking place in a process.
- It ensures product quality level.
- It provides information about the selection and setting of tolerance limits.
They are of two types:
- Variable control chart.
- Attribute control charts.
|
Variable control chart |
Attribute control charts |
|
Applied to data with continuous distribution. |
Applied to data following discrete distribution. |
|
Eg. time, weight, temperature, etc. |
Eg. success or failure, accept or reject etc. |
|
X-bar, R-chart, S-chart comes under the variable chart. |
P-chart, C-chart, U-chart, Np-chart comes under attribute charts. |
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