How to Read an Economic Forecast: 5 Questions to Ask First
The short answer: an economic forecast is a conditional scenario , not a prediction of what will happen. Before you act on one — or even worry about one — ask five questions: What kind of forecast is it? How wide is the range? What assumptions would break it? How often has this source been wrong, and by how much? And how fresh is it? Here is how to answer each one, with the actual track record behind it. Most forecast coverage fails at the first step. It reports a single number — "economists expect 2.1% growth" — as if it were a measurement. It is not. It is the middle of a distribution that the headline chose not to show you. Reading a forecast well means recovering what the headline left out. Question 1: What kind of forecast is this? Not all forecasts are the same kind of statement, and confusing them is the first misread. There are roughly three kinds: A point forecast is a single number: "GDP will grow 2.1% next year." This is what headlines quote, and...