To be fair, CNN “leans left” in the same way US Democrat liberals “lean left”. Which is to say, socially progressive (usually) and economically capitalist.
Assuming I’m using those terms right, which I think I am, at least in the context of the US.
It ain’t perfect (cost of living has always been relatively high, even for states with comparable cities), but it’s far and away better than any red state to my knowledge.
It does, but that may not necessarily be a bad thing. It largely depends on what the overall dataset looks like.
It’s not unusual to tweak your dataset in response to certain biases, especially if there is a known bias at play (for example, I’ve actually met plenty of parents who keep having kids hoping for a boy/girl, and then stop once they get what they initially wanted. As creepy and weird as that is to me, it’s definitely a thing).
This does seem a bit blunt of an approach, however. I would’ve preferred a survey question as part of data collection where parents are asked if they were “trying” for one sex over another, if they wanted “one of each”, etc etc., and then using that info to weight the data.
But without reading the article myself, my assumption is they just used a readily available dataset (such as medical records) rather than recruit participants directly. But I could be wrong, didn’t read it after all.
This is splitting hairs a bit, but Ground News is more of an aggregator with useful framing than a source in and of itself.