Photo by Surfstyle
Photo by Surfstyle

What Is A Matrix Diagram?

A matrix diagram also called matrix chart is a project management tool that assists in the investigation of relationships.

Matrix Chart displays relationships within a single group or amongst two, three, or four groups (Ex. project objective, methods, results, causes, people, etc.). It also provides information like the strength of relationship amongst the group, the roles played by various groups,etc.

Why use a Matrix Chart?

Project managers deal with various processes, people, and programs. It helps to envisage and also recognize the complex relationship between the data sets.

Management can organize data, prioritize resources, and also make the right decision to keep the project on track.

When to use Matrix Chart?

Matrix chart is a planning and decision-making tool that is useful in various applications, primarily to assess the relations between two or more groups. Cause and Effect Matrix and QFD use the Matrix Diagram.

  • Determine the problem causes
  • Assigning the resources based on skills and requirements 
  • Comparing the consequence of alternative solutions    
  • Identifying the opportunity for improvements
  • Analysis of requirement fulfillment 

What Would You Use a Matrix Chart?

Use the matrix diagram to discover the strength of relationships between a grid of rows and columns indicated by a number or symbol in the cell. A great example of this is the House of Quality in a Quality Functional Design (QFD).

How to create?

  • Define the objective: Identify the purpose of the matrix diagram, and determine the relationship between the data sets. This will help to select the team, data collection, and also selection of matrix chart.
  • Select the team: Select the team who are expertise in the process and also knowledge in collecting the data.
  • Determine the appropriate matrix diagram: Based on the project’s objective and source of data, the team has to select the appropriate matrix chart and what type of symbols to be used to determine the relationship between the groups.
  • Plan and collect the data: Team has to plan and collect accurate data for the different data sets.
  • Document the relationship between the groups: This is one of the crucial steps; the team has to use appropriate symbols or methods to use the relationship between the groups and to get the consensus among the team members.
  • Draw conclusions: Review the relationship between the groups and draw a conclusion based on the data. While the matrix diagram may be a time-consuming investment is well worth the effort.

Types of Matrix Diagrams

The selection of a matrix chart depends on the number of elements or groups to compare. Common matrix diagrams are L-Type, T-Type, X-Type, and Y-Type.

Matrix Diagram

L-Type Matrix Diagram

What is an L-Type Matrix Chart?

L-Type Matrix Chart is the most basic and widely used matrix chart to compare only two data sets. It is a form of upside-down L.

When You Would Use an L-Type Matrix Chart

L-Type Matrix chart is a two-dimensional table (one element on the X-axis and another on Y-axis) used to compare only two sets of data or compare relationships within one group.

How to Make an L-Type Matrix Diagram

The elements of the one data set place on the left side of the table while the other data set elements listed on the top row of the table. Use symbols to easily visualize and also indicate the strength of the relationship between the elements in the intersecting cells. 

Example of Using an L-Type Matrix Chart

Example: Selection of car dealer based on various parameters.

Matrix Diagram

T -Type Matrix Diagram

What is an T-Type Matrix Diagram?

A T-Type matrix is a two-L type matrix chart joined by a single list. While L-type matrix compares the two data sets, T-type matrix compares the two data sets with the third primary list.

When You Would Use an T-Type Matrix Diagram

The T-type matrix diagram compares the two data sets with one main list (i.e third data set).

How to Make an T-Type Matrix Diagram

2 elements on the Y axis. One element on the x axis that splits the Y.

Place the primary list in the middle of the sheet (X-axis), and list the one data set in the top side of the primary list (on the Y-axis) and another data set in the bottom side of the primary list (same on the Y-axis). Compare the strength of the relationship with the primary list.

Example of Using an T-Type Matrix Diagram

Example: Comparing the individual skills on various subjects and project execution performance.

Matrix Diagram

X Type Matrix Diagram

What is an X-Type Matrix Diagram?

X- type matrix chart is an extension to the T-type matrix chart to include one more data set.

When You Would Use an X-Type Matrix Diagram

X-type matrix chart typically shows the significant relationships of four data sets. Compare the relationship between the adjacent groups.

How to Make an X-Type Matrix Chart

2 elements on the Y, 2 elements on the X.

Similar to the T-type matrix, place the two groups of data sets on the Y-axis and one data set on the X-axis (middle of two Y-axis data sets) and other data set on the left side of X-axis.

Example of Using an X-Type Matrix Chart

Example: Volume of cars: Plant-Model-Supplier- Deliver service.

Y Type Matrix Diagram

What is a Y-Type Matrix Diagram?

Y- type matrix chart compares the relationship between three groups of data sets.

When You Would Use an Y-Type Matrix Chart

In T- type matrix chart, we are not comparing the two groups listed in the Y-axis, whereas in the Y-type matrix chart comparing the three strongly groups in a circular form.

How to Make an Y-Type Matrix Chart

Y-Type Matrix chart is a 3-Dimensional grid where there are (2) L-Type matrices joined at the Y-axis.

Example of Using an Y-Type Matrix Chart

Example: Customer Experience in flight: Customer requirements- Region-Food and beverage supplier.

Matrix Diagram Videos


Comments (3)

Hi John Snow,

Was really upset to see how things ended for you on the show.

In the meantime the page has been updated per your request. I hope you like the examples!

Best, Ted.

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