Category
Expected Value & Probability
Expected Value: A Practical Guide for Everyday Decisions
What expected value means, worked warranty and insurance-excess examples, and the crucial cases where EV is the wrong tool: one-shot decisions, risk of ruin, and the difference between value and utility.
Expected Value and the One-Shot Problem
Expected value describes an average across many repetitions of the same choice. A worked repair-or-replace example, computed with ReDecide's own calculator, shows exactly what that average does and doesn't tell you when you only get to choose once.
Cost-Benefit Analysis When the Costs and Benefits Aren't in the Same Units
A cost-benefit tool needs every cost and benefit expressed in the same unit, but real decisions rarely offer that. A worked home-insulation example, computed with ReDecide's own analyzer, shows how a single soft assumption can flip the entire verdict.