"The data suggests 77.5% of those aged 16 and older had antibodies from COVID-19 infection by the time 2022 ended, according to the agency's final estimates, which is up from the 48.8% estimate at the beginning of the year."

https://abcnews.go.com/Health/1-4-americans-contracted-covid-end-2022-cdc/story?id=100716301&cid=social_twitter_abcn

1 in 4 Americans hadn't contracted COVID by the end of 2022, CDC estimates

Seniors had the lowest percentage of COVID antibodies from previous infection.

ABC News

This headline says "1 in 4 had no antibodies", which is supposed to be the inverse to the statistical conclusion - "77.5% had antibodies"

77.5% is closer to 4/5ths than 3/4ths

So it would be more appropriate to claim "1 in 5 hadn't", if we're going to insist on muddying the waters this way

@pleaseclap excepting extra possible muddiness with the sig figs, 77.5% is equidistant from the two-

775/1000 = 31/40
3/4 = 30/40
4/5 = 32/40

No matter which way the article rounds the number, it's equally wrong.

@actualhater

Yes, and

If you had to round "77.5" to a whole number, it would round to 78 every time

However, because 77.5 is already probably a rounded number, "77.5" might just as likely be "77.46" as "77.54", which does muddy my complaint a little bit

@pleaseclap if anything, I'd say it bolsters your complaint- this article has mud on its hands