While I do agree that all businesses must track key numbers and recognize certain trends, I do not take that as the only criteria. I have been to many management training seminars and clinics and have taken countless home study courses.
Numbers are great, but real world is better. My philosophy is to look at each shop and find out what works for them. I really don’t think you can use a benchmark number in California and say it holds true in Rocky Mountain N.C .
Every business is different with different fixed expenses, goals, employee wages, labor rates, rents, etc. A shop owner needs to sit down with his/her accountant and find out that they need to turn a profit.
So, while we need to understand the numbers of the business, it’s our numbers that really count.