Homework Day 2

1.  Watch this video
Hypothesis Testing using SigmaXL
Questions:
  • 1. Which customer Type ( 1, 2 or 3 ) has a mean Customer Satisfaction score that is Statistically Different to 3.5 ?
  • 2.  What p-value does this customer category produce in the hypothesis test ?
2.  Read  the PDF ‘Control Charts Summary’, below is a link to the PDF
Controls Charts Summary
Answer these 3 Questions:

1. What is Common Cause Variation ?
2. What is Special Cause Variation ?
3.  What are the ‘8 Rules’ for Special Cause Variation ?

3.  Read the PDF  ‘Introduction to Design of Experiments’, below is a link to the PDF
Download – ‘Introduction to Design of Experiments’
 Answer these 6 questions:

1.  What are ‘Factors’.
2. What are ‘Continuous Variables’ ?
3.  What are ‘Discrete Variables’ ?
4.  What are ‘Responses’ ?
5.  What are ‘Residuals’ ?
6.  What is an ‘Experimental Design’ ?

4.  Watch Paul Allen’s Video about Variation and how it causes poor quality.
 Answer this Question :
In what sort of areas does variation increase the COST of POOR QUALITY in your processes ?  Give 3 more examples of cost increases because we have too much variability (  I have given you the first answer ) ..
  1.  MORE STOCK / INVENTORY IS NEEDED WHEN YOU HAVE HIGH  VARIATION IN YOUR PROCESSES