How to Create a Control Chart
Автор: Andy Kriebel
Загружено: 2021-03-09
Просмотров: 11835
Описание:
In this video, I show you how to create a control chart that allows the user to specify the number of standard deviations at which to plot the upper and lower control limits.
Control charts are used to monitor the stability and control of measurements over a period of time. There are four elements to make an effective control chart.
1. A control chart is a time series graph.
2. A line across the time series that represents the mean of all of the measurements in the graph.
3. Upper and lower control limits (UCL and LCL) that are displayed as a reference band across the view at a specified number of standard deviations from the mean.
4. Indicators to show which measurements are "out of control".
Typically, any measurements that are more than three standard deviations from the mean are considered unlikely and therefore outside the control limits. However, it is also common to consider measurements that are more than 1 or 2 standard deviations from the mean as a form of analysis.
Download the workbook here - https://www.vizwiz.com/2021/03/contro...
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