RCA
Solutions
Lean and Six Sigma
A3 -Potpourri
Quantitative Measures
100

The acronym RCA stands for this

What is root cause analysis?

100

This creative technique helps teams generate many ideas in a short amount of time, encourages participation from everyone, and builds on each other’s thinking to unlock new solutions.

What is brainstorming?

100

Lean focuses on reducing this, while Six Sigma aims to reduce variation.

What is waste?

100

This describes what problem you are trying to solve.

What is a problem statement?

100

This visual tool is commonly used to track improvement over time.

What is a Run chart?

200

Developed by Ishikawa, another term for this diagram

What is a Fishbone diagram or Cause and Effect diagram?

200

This brainstorming tool groups similar ideas into categories or themes.

What is an Affinity Diagram?

200

In the 8 Wastes of Lean (WASTEFUL), this type of waste occurs when team members are not used to their full potential.

What is underutilized talent?

200

This term means “the real place” and refers to observing work where it actually happens.

What is a Gemba Walk?

200

This type of chart helps identify the most common causes or categories contributing to a problem, based on the 80/20 rule.

What is a Pareto chart?

300

The number of times one typically asks 'why'

What is 5?

300

This matrix helps prioritize ideas based on effort and impact.

What is the Action Priority Matrix (or Impact Effort Matrix or PICK Chart, or 2 by 2)?

300

This improvement approach focuses on reducing variation and defects in a process—and is often described as allowing no more than 3.4 defects per million opportunities  

What is Six Sigma?

300

Capturing this helps ensure improvement efforts align with what customers truly need and want.

What is Voice of the Customer (VOC)?

300

Scheduling a well-care visit is an example of this type of metric, while completed visits are an example of this other type. Together, they show leading vs. lagging performance.

What are process (leading) and outcome (lagging) metrics?

400

This is entered into the head of the fish

What is the problem statement?

400

In an Action Priority Matrix, ideas are plotted by impact and effort. Name the four resulting categories used to guide decision-making.

What are Quick Wins, Major Projects, Fill-ins, and Thankless Tasks? (also acceptable, Possible, Implement, Challenge, Kill)

400

In Lean, this type of waste can include “swivel chair” tasks—like manually entering the same data into multiple systems—causing delays and extra effort moving information between tools.

What is transportation?

400

This visual tool depicts each step in a workflow or process, helping teams identify bottlenecks and inefficiencies.

What is a process map? (or workflow, or flowchart)

400

This measure of central tendency is used in run charts instead of an average.

What is the median?

500

These are the 6 categories typically used when creating a fishbone diagram

What are:

People/Manpower; Machine; Measures; Mother Nature/Environment; Methods/Process; Materials?

500

To evaluate the impact and effort of an improvement project, teams often consider multiple factors beyond just the idea itself. Name three common criteria used to assess whether a project is worth pursuing.

What are any three of the following: cost, development stage, alignment with strategic goals, timeline, significance, measurability, or barriers?

500

This Japanese Lean concept is not one of the 8 Wastes, but acts like a hidden force that saps productivity by overloading people, equipment, or processes—leading to exhaustion, burnout, and increased errors. Think: exhausted staff, overtaxed machines, or convoluted workflows.

What is Muri?

500

Besides the project lead and team members, this role is accountable for the project’s success and must provide active, visible support throughout the improvement effort.  

Who is the executive sponsor?

500

These 3 elements are required in a run chart.

What are the median (to detect shifts), a goal line (to compare against a target), and annotations (to explain changes or interventions)?

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