Correlation between Games Per Week and Rank?

Do we have any data on how often, and for how long, players play League? I for one play one or two games a day, almost every day, but I'm curious how common that is. Especially about how common that is at each level. I'm in Silver 5 -- is it rare to get into, say, Gold and Plat with only playing one game a day?

On the other hand, I see plenty of people's profiles on op.gg that grind and grind, and have several hundred ranked games a season, and are still stuck in Bronze or Silver.

[zombie-brand-facepalm] (feelsbad for them)

A graph I'd love to see is a simple "games played per week" vs. what league people are in.

Another interesting metric might be, how many normal games vs. ranked games people play, and whether that translates to ELO.