If you are the one who is getting prepared for the PMP certification exam, then you should know what is run chart vs control chart is. Run chart and Control chart are two basic elements that are necessary for Quality control tools. Both are used in project management for evaluating and analyzing the results.
Some people have doubts about these two processes and mix them up. So, that’s why in this content we will share the whole difference in both of these processes. Be with us till the end to have complete details. Let’s dive into it!
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What is a Run Chart?
A Run chart vs control chart, are both helping tools for a project. However, first, let me tell you about the Run chart and later on, the Control chart.
A Run chart is a simple chart that defines data points for a long period. It is a two-dimensional graph in which one axis indicates the value and the other axis indicates the time.
A Run chart will help analyze the following over time:
- Changes or tendencies of the project or process.
- The cycle of the process.
- Performance of a whole project or process.
For the project calculation, you can draw your actual progress along your planned lines with the assistance of Run charts.
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What is a Run chart used for?
A Run chart is used to gather data for patterns for a long period. It will also be helpful in monitoring trends, and data for the process.
Advantages of Using a Run Chart:
The following are the advantages of a Run Chart:
- A Run chart is a sight tool that provides you convivence in drawing and using it.
- A Run chart allows you to control the performance of your project or process at an ease.
- Run charts do not need any technical skills to operate.
- Run charts are a sort of communication tool that allows you to take the right decision.
- Run charts help you in improving your team’s performance as it represents the progress of your project.
- Run charts are an important tool for project managers as it shows the data pattern, which will help them in analyzing and implementing the basic changes in the project.
- Run charts underline the right direction for improving your project or process by giving details on a specific change in the process.
- Run charts help you in displaying and analyze your gathered data easily.
- Run charts depict the results of any change you made in the process for its improvement.
- Run charts expedite the temporal and static evaluation of a project or process over time.
- Run charts determine whether the project or process is going in the right direction or not.
- Run charts are a straightforward depiction of data.
Disadvantages of Using a Run Chart:
Below are the disadvantages of a Run chart:
- A Run chart does not provide statistical control limits. Therefore, a project manager is unable to identify the major and minor tolerance limits.
- Run charts do not give you enough information related to the stability & tendency of the process.
- Run charts cannot depict whether a process is in control or not.
What is a Control Chart?
A control chart is a particular type of graph that indicate data points between the upper and lower limits for a long period.
Its other name is the Shewhart chart which is created by Mr. Walter A. Shewhart. A control chart will help you in understanding whether the process is in control or not. Control charts usually have three types of lines such as upper and lower statement limits, and your planned value.
For example, a control chart can be utilized to check the deportment of a chemical agent.
Let’s say that the chemical agent should be effective for at least 30 minutes in the process, which will help in preventing any harmful effects.
In this example, the lower control limit is nearly 30 minutes and the upper control limit is nearly 60 minutes.
What are the 4 types of control charts?
Types of Control Charts are as follows:
- X-Chart- X-Charts present variable data.
- P-Chart- P-Charts are used for data that is counted.
- NP-Chart-NP-Charts are used to present the number of non-conforming or conforming items.
Advantages of Using a Control Chart:
The following are some advantages of a control chart:
- A control chart helps you to identify the stability of a project or process.
- A control chart helps you identify the regions where the improvements need to take.
- Control charts enable you to analyze the disparity between the given limits for a process.
- Control charts give you a general view of your project or process on a single chart.
- Control charts will determine whether the process is improving or not.
- Control charts give you an exact performance boundary which is important while analyzing your progress report.
- Control charts are worthy as they can analyze both variable and attribute data.
- Control charts are easy to use for discussing the project and also in analysis.
Disadvantages of Control Charts:
Below are some disadvantages of control charts:
- Control charts need all basic knowledge of statistical terms.
- Control charts are not useable for non-homogeneous samples.
- Control charts may not help make the right decision for the process.
- Control charts only depict the current performance of a project or process.
- Using control charts maybe not help evaluate the capability of a project or process.
What is the main common feature of Run charts and Control Charts?
In short, both charts are good for a project or process as they can depict the flaws in your process. They are also called communication tools which will help you in identifying your project progress.
It was a brief discussion on the Run charts vs control charts. We have shared their benefits along with limitations, you can check all the details if you are a project manager. Did you find this content worthy, comment below to know us about your suggestions.