Root cause analysis

Root cause analysis

This course teach you how to identify, prove and solve true root causes to achieve lasting solutions to a problem.

The course follows Six Sigma's DMAIC problem-solving method:

  • Define: Understand problem 
  • Measure: Identify possible causes
  • Analyze: Prove true root causes
  • Improve: Solve root causes
  • Control: Create lasting solution

The course focus on the Measure and Analyze phase. The purpose of the course is to identify and prove root causes to ensure lasting solution(s) to a problem.

This course is 2 days training where we combine theory with practical exercises. The exercises can be customized based on the need of the company and your own data can be used. 

This course is also conducted through web meetings, videos and group coaching: 3 web meetings of 2 hours focusing on practical exercises. The theory is presented through videos (approx. 2 hours). 1 hour group coaching 2-4 weeks after the last web meeting, helps you practice what you learned.

You will receive a course certificate after completing the course.  

or send an This email address is being protected from spambots. You need JavaScript enabled to view it.

 Course content:

  • Define: Problem statement
  • Define: Goal statement (specific)
  • Define: Understand the problem and possible next steps using Thought Map
  • Measure: Create Process Map and identify possible causes of a problem
  • Measure: Data collection based on theories
  • Measure: Understand the difference between discrete and continuous data
  • Measure: Use statistics to make sense of data (center, spread and shape)
  • Measure: Separate normal and special variation using Control Charts
  • Measure: Determine capability and problem-solving strategy 

Galton board

Galton board is used during the training for basic understanding of statistics and histograms. We will also use it for practical exercises.

  • Analyze: Select the most suitable graph to prove /disprove root causes:
    • Histogram
    • Pie Chart
    • Bar Chart
    • Pareto Chart
    • Run chart
    • Time-series plot
    • Box plot
    • X-Y chart / Scatter plot
  • Improve: Brainstorming techniques, priority matrixes and implementation plan
  • Control: Follow-up to ensure lasting solutions

Practical information

The course is arranged on request from companies with 6-15 participants. Courses can be tailored to your business needs, and your own data can be used in examples and assignments. 

Open courses are arranged according to the course calendar. 

Online course & online course with coaching can be started whenever you want. 

Lunch, refreshments and drinks during classroom training are included, and you receive a course certificate upon completion.


Classroom training is organized at the locations Lean Tech disposes at Lillestrøm (Svelleveien 33). Good access to parking spaces. It's 2 km from Lillestrøm train station.

Lean Tech has an agreement with Thon hotels and can set up courses elsewhere if needed. It is also possible to arrange business courses at the Company's location.



Instructor Sissel Pedersen Lundeby is IASSC (International association for Six Sigma certification) accredited trainer associate (only-one in Norway per August 2019):

"This accreditation publically reflects that you have met the standards established by IASSC such that those who participate in a training program led by you can expect to receive an acceptable level of knowledge transfer consistent with the Lean Six Sigma belt Bodies of Knowledge as established by IASSC."

Sissel has a Master in Chemical Engineering from NTNU (Norwegian University of Science and Technology) and 20 year's experience within manufacturing and environmental technology. In 2002 she started working at a US company where she was introduced to Six Sigma and completed her Black Belt certification. In 2017, she was also certified Black Belt through IASSC.

Sissel has positive experience using Lean Six Sigma to improve and focuses on measurable results. The courses use practical, recognizable examples and communicate Lean Six Sigma in a way that is easy to understand.


"Inspiring, professionally competent, popularize a theoretical discipline"

Espen Fjeld, Commercial Director at Berendsen

"Academic highly skilled and clear performance. Fun and builds trust"

Jon Sørensen, Production Manager at Berendsen

"10/10 good at reaching everyone"

Erlend Stene, Sales leader at Berendsen

"Clear and well presented. Good at asking questions and listen (check understanding)"

Morten Bodding, Production Manager at Berendsen

"Made a difference, engaged and skilled" - Participant from EWOS

"You are inspiring, positive and professionally skilled" - Participant from EWOS

Anonymous feedback:

"Clear presentations and well explained"

"I thought it was very rich, with good examples that made me reflect"


  • daryl powell"I was very impressed with Sissel's Lean Six Sigma knowledge. She makes it easy to identify improvements and create results"
    - Daryl Powell, Research Manager, Sintef ManufacturingValue stream mapping
  • eivindwilloch.original"Sissel has proven herself as a competent and committed employee. She has been an important contributor to make good progress in the projects she has worked with. At the same time she is accurate and has good quality of the work she performs."
    - Eivind Willoch, Project Manager, Cambi AS lean engineering
  • benchmarking"We are very happy with the work carried out. We was not very clear what the order was, but with your background and expertise the outcome was what we were looking for and a document we will benefit from in the future"
    - Roger Søråsdekkan, Site Leader at Allnex, Norwaybenchmarking
  • kjelleven rez"We hired Lean Tech to develop monitoring program for air emission. The assignment was delivered with the correct content at the right time. Recommended." monitoring program
    - Kjell Even Misfjord, SHE manager at Allnex, Norway  
  • rsz 1thomasløvik"Sissels ability to quickly understand the issue, as well as her commitment and expertise is impressive. Her analytical and thorough contribution to our monitoring program has been precise and targeted, and very educational. " monitoring program
    - Thomas Løvik, HSEQ advisor at TWMA, Norway
  • Joakim Holm Hansen"Very nice and professional service. Delivered a good job within deadlines" verdistrømsanalyse
    - Joakim Holm-Hansen, Plant Manager at Solenis, Norway
  • Feedback from course participants:
    "Inspiring, professionally competent, popularize a theoretical discipline."
    "Made a difference, engaged and skilled."
    "Academic highly skilled and clear performance. Fun and builds trust."
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