EWMA Control Charts

Create Exponentially Weighted Control Charts

Exponentially weighted moving average (EWMA) charts can be used to detect small shifts in a process. Each point on an EWMA chart is the weighted average of all the previous subgroup means, including the mean of the present subgroup sample. The weights decrease exponentially going backward in time.

Figure 9.1 EWMA Control Chart Report 

Contents

Overview of the EWMA Control Chart Platform

Example of the EWMA Control Chart Platform

Launch the EWMA Control Chart Platform

The EWMA Control Chart Platform Report

Control Panel for EWMA Control Chart

EWMA Chart Report

The EWMA Control Chart Platform Options

Average Run Length (ARL) Report for EWMA Control Charts

Additional Example of the EWMA Control Chart Platform

Statistical Details for the EWMA Control Chart Platform