To calculate the average value of individual subgroup size. Make sure that your attention is now on the right side corner of the above figure. X-Double Bar means an average of average. 3.1 X-Bar Chart:īefore we start, just go through the green highlighted terms in the above figure as Average First, we will plot X-Bar Chart and then R-Chart. So individually we will plot both charts (X-Bar Chart & Range Chart). Step-3: According to data type and Sample size, presently we are going to plot the X-Bar & R-Chart. Hence the applicable Chart is the Average and Range Chart (X-Bar & Range).

So we are having variable type data and the sample size is 5. The Data types and applicable Control Chart. You are supposed to collect the data as per Control Plan or Quality Assurance Plan. So we are having only one shift data for 5 days. Step-1: Collect The Data day-wise/shift-wise.Īs you can see in the above figure, we have collected data with a sample size of 5 for A-Shift with frequency (5 samples per 2 hours). How to Plot Pareto Chart in Excel ( with example) How to Create ControlĬhart Excel Template| Step by Step Guides (X-Bar & Range Chart) with You will also like to read the CAPA ProcessħQC Tools for Problem Solving | What are 7 QC Tools Quantify Common Cause Variation, and take action to reduce it.Identify Special Causes of Variation and Act upon them.Calculate control limits from process data.To Collect Data and Plot the Control Chart.

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