Question

3. SPC and Control Charts

1. Define what SPC stands for and means.
2. Outline the five (5) key steps for setting up a control chart and monitoring a process
3. Name the chart type and list the chart(s) and formula(s) for one (1) control chart for Variable Data and one (1) type for Attribute Data.

4. Explain and list the case characteristics that describe when you would use the chart types named and listed in part (c)

5. Sketch and fully label all the parts of the control charts you mentioned in part (c)

4. Six Sigma

1. Define and explain Six Sigma Quality Practises
2. Fully describe and list the five (5) factors to be considered when selecting a Six Sigma project.

Answer 1

a) Statistical process control (SPC) is a powerful collection of problem-solving tools useful in achieving process stability and improving capability through the reduction of variability.

b) 1. collect and calculate the subgroup data.

2. calculate the control limits and centralines.

3. plot the data

4. Interpret the control chart

5. check the limits, if it is stable.

b) five (5) factors to be considered when selecting a Six Sigma project are:

1. Define

Define is the first phase of the Lean Six Sigma improvement process. During this phase the project team drafts a Project Charter, plots a high-level map of the process and clarifies the needs of the process customers. By conducting Process Walks and talking to process participants they begin their journey of building their process knowledge

2. Measure

Measurement is critical throughout the life of the project since it provides key indicators of process health and clues to where process issues are happening.

3. Analyze

Without proper analysis, teams can implement solutions that don’t resolve the issue - this wastes time, consumes resources, increases variation and risks causing new problems.

4. Improve

it’s time for the team to implement plans to resolve the root cause(s). The Improve Phase is where the team refines their countermeasure ideas, pilots process changes, implements solutions and lastly, collects data to confirm there is measurable improvement.

5. Control

In the Control Phase, the team develops a Monitoring Plan to track the success of the updated process and crafts a Response Plan in case there is a dip in performance.