Lean Analytics: Use Data to Build a Better Startup Faster (Lean (O'Reilly))

by Alistair Croll

If you want to choose the right metrics, you need to keep five things in mind: Qualitative versus quantitative metrics Qualitative metrics are unstructured, anecdotal, revealing, and hard to aggregate; quantitative metrics involve numbers and statistics, and provide hard numbers but less insight. Vanity versus actionable metrics Vanity metrics might make you feel good, but they don’t change how you act. Actionable metrics change your behavior by helping you pick a course of action. Exploratory versus reporting metrics Exploratory metrics are speculative and try to find unknown insights to give you the upper hand, while reporting metrics keep you abreast of normal, managerial, day-to-day operations. Leading versus lagging metrics Leading metrics give you a predictive understanding of the future; lagging metrics explain the past. Leading metrics are better because you still have time to act on them — the horse hasn’t left the barn yet. Correlated versus causal metrics If two metrics change together, they’re correlated, but if one metric causes another metric to change, they’re causal. If you find a causal relationship between something you want (like revenue) and something you can control (like which ad you show), then you can change the future.