title_body: What quantity of ground coffee should I use for an automatic drip machine?
upvoted_answer: I think you have already listed the "industry standard" that is the answer to your question.  It is a good starting point for anyone and the amount can be adjusted by taste afterwards (more grounds for stronger coffee, less for weaker).
  
  The amount may vary with brewing method of course, since depending on the method, brew components (grounds, filter, other components) may retain various levels of water. 
  
  The one add on I will stipulate is that it is always better (for groups) to brew coffee that is too strong.  It is very easy to add some hot water to a cup and weaken a cup of coffee,  however, if you like strong coffee and it's been brewed weak, you are just out of luck.