STUART THEOBALD: Data can’t be taken at face value during these strange times
In normal times we become, perhaps unwisely, comfortable with what statistics mean. We see a number — GDP growth, unemployment — and immediately think we know something about how the world is changing.
But Covid-19 has caused what statisticians call a regime change, because the underlying conditions that generate the data fundamentally changed during the lockdown. Simultaneously, the act of data gathering itself was disrupted.