Q) Define special cause and common cause variation. Why is it important to distinguish between the two types of variation? In reference to improvement efforts how would you approach the control of both types of variation?Provide an example or real life situation 2 references proper grammar put most in your own words cite what is not your own words Make sure what you write relates to the topic Go to google books on line for this bookAdvance Performance Improvement in Health care Principles and Methods by Donald E. Lighter.