What are Control Charts in Excel?

Control chart is a type of chart which is used to analyze how the data changes in time to time, it is also known as behavioral chart or Shewhart chart in excel, it is used in statistics in business which helps user or the viewers to analyze how any process changes, its components are control line and upper and lower control line and the means of making it is with the help of calculations of average and standard deviation of the data.

“Control Chart” is the visual graph used to analyze the change of process over a period of time. To plot this excel graph, we need to arrange the data in chronological order with current data sets. To create a control chart in excel, we need to have what is the average of the data, what is the upper control limit of the data, and what is the lower control limit of the data.

All these lines or drawn by using historical data sets, and we compare the current set of data with average, upper limit, and lower limit lines in the graph to draw conclusions whether the process variation is consistent or inconsistent and also to understand whether the data is unpredictable. If all the data points come within the control limit lines (average, upper, lower), then variations may be due to general cause and process said to be in control. Similarly, if the data points are plotting above or below the limit line, then variations may be due to special cases, and process said to out control”.

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Source: Control Charts in Excel (wallstreetmojo.com)

Types of Control Charts in Excel

We have four kinds of Control Chart with excel. Below are the types of Control Chart with excel.

High – Low – Close
Open – High – Low – Close
Volume- High – Low – Close
Volume – Open – High – Low – Close

Each chart requires a specific set of data. Let us have a look at how each type of control chart is created.

You can download this Control Chart Types Excel Template here – Control Chart Types Excel Template

Type #1 – High – Low – Close Control Chart

To create this type of Control Chart, we need to have three sets of data, i.e., what is the high price in the day or high-value point, what is the low-value point, and what is the actual closing number.

Copy and paste the below data sets to your worksheet.
Once you have copied the data to the worksheet, select the data, and go to the Insert tab.
In the insert, go to charts area > Stock Chart > High-Low-Close Chart.
We will have a chart below.
We cannot identify anything with this chart, so we need to color each line in our own way. By selecting the chart to go to “Format” > Current Selection > and from the drop-down, select “Series High.”
This would select the high line from the chart. So, now again, under FORMAT, choose “Shape Outline” and choose the color as per your wish.
Now we can see the High line is colored with a green color.
Now we need to repeat the same task for the other two lines as well, i.e., “Low” & “Close.”