I-MR Charts
Define SPC
Stable, Predictable, Consistent
How does the Xbar R chart provide direction of work?
Helps identify Where and How to Work
What type of Sampling Plans are the best?
Event based / Relevant to questions/learnings
When do we need to create a Product or Process map?
Every time we want to learn about our product or process!
All the time!
What are the uses of a thought map?
Organize Thoughts
Document Ideas / Questions / Actions / Results / Parallel paths
Communication Tool /Collaboration tool
How should we order the data when creating an Individuals and Moving Range chart
In Time Order
Which chart to we see "Within Subgroup Variation"
Range Chart
What do we need to have a good understanding of before we create our sampling plan?
Product or Process
Are the key aspects of a product / process map
Living Document / Big Y / Little Y's / X's / Noise / SOP / Controls
What are the key aspects of a thought map?
Living Document / Questions / Theories / Actions / Information / Predictions / Results
What is the sample size for Individuals and Moving Range Charts?
Sample Size = 1
When can we analyze the X_bar Chart
If our Range Chart is in Control
When do we create a sample plan?
Every time we collect data or are planning a data collection / experiment
What's the first step in creating a product / process map?
Walk the process / be the product to create the "As-Is" view of the process or product
Overall Objective of the project:
Catapult: reduce the variation launch to launch to be able to consistently launch the same distance
What is the crucial value used in determining our Control Limits for the Moving Range and Indiviuals Chart?
Average Moving Range (MR_Bar)
Which Chart do we see Between Subgroup Variation?
X_bar Chart
What type of chart in Minitab can help visualize the data in my sampling plan?
Variability charts & Control Charts
What's the difference between Big Y, Little Y's, and X's
Big Y - Overall Question or goal
Little Y's - Response variables of our product or process impacted by our X's and N's
X's - Factors or parameters impacting our Y's
When do we update our thought map?
All the time!
As we learn more, ask more questions, and progress
Special Cause - Points outside of the Control Limits on the MR Chart
Common Cause - Points contained within the control limits on the MR Chart
How can we estimate our Within Subgroup Variation?
Rbar / d_2
How do we determine our sample size?
It depends on our product / process.
More = Better (Central limit theorm)
More = Expensive / time consuming
How do we connect our Product / Process Maps to our data collection?
Sampling Plans that include the factors we want to learn about, specifying their rate of change
Define the Inductive / Deductive learning Cycle and how does the thought map help?
Hypothesis, Conjecture, Theories, Questions Lead Planned experimentation, data collection to gather facts, confirm phenomena, and leads to more questions, hypothesis, theories.
We can track our questions, theories, and hypothesis through parllel paths and show the inductive deductive learning cycle through the thought map