V-Mask CUSUM Control Charts

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Quality and Process Methods • V-Mask CUSUM Control Charts

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V-Mask CUSUM Control Charts

Use a V-Mask to Detect Small Shifts in the Process Mean

CUSUM charts show cumulative sums of subgroup or individual measurements from a target value. CUSUM charts can help you decide whether a process is in a state of statistical control by detecting small, sustained shifts in the process mean. In comparison, Shewhart charts can detect sudden and large changes in measurement, such as a two or three sigma shift, but they are less effective at spotting smaller changes, such as a one sigma shift.

Figure 5.1 Example of a V-Mask CUSUM Chart

Contents

Overview of V-Mask CUSUM Control Charts

Example of a V-Mask CUSUM Chart

Launch the V-Mask CUSUM Control Chart Platform

The V-Mask CUSUM Control Chart

Interpret a Two-Sided V-Mask CUSUM Chart

Interpret a One-Sided CUSUM Chart

V-Mask CUSUM Control Chart Platform Options

Example of a One-Sided CUSUM Chart

Statistical Details for V-Mask CUSUM Control Charts

One-Sided CUSUM Charts

Two-Sided CUSUM Charts

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Help created on 7/12/2018