Covid-19 is a reminder to beware of seasonality in recordsdata

From immigration patterns to family spending to tune listening, coronavirus is popping 2020 upside down.

In the US, most of that substitute took place between February and April, which makes taking a gape at trends tricky. Many recordsdata ingredients substitute from February to April each year, so as to esteem the magnitude of a substitute you might perchance perchance compare it to what befell in earlier years. In various words: Beware of seasonality.