ERG theory”: people seek existence, relatedness, and growth, in - Josh Kaufman

Lifetime Value is the total value of a customer’s business over the lifetime of their relationship with your company.

Thinking Statistically by Uri Bram How to Lie with Statistics by Darrell Huff Turning Numbers into Knowledge by Jonathan G. Koomey, PhD For an examination of more advanced methods of analysis, Principles of Statistics by M. G. Bulmer is a useful reference.

How vain it is to sit down to write when you have not stood up to live. — HENRY DAVID THOREAU