September 2022
Beginner
337 pages
9h 39m
English
Content preview from How Charts Work: Understand and explain data with confidence
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
17
Visualising uncertainty – a case study
Data presented in chart form can seem so authoritative, so seductive, that we might forget to question how much faith we can place in the actual numbers presented. This would be a mistake – understanding the extent to which we can rely on data is an important part of developing our chart literacy.
A key point is realising that data is never perfect. Just like humans, data suffers from flaws, sometimes insignificant, sometimes critical.
- •Error. This can be systematic – a measuring device was calibrated incorrectly, or a survey designed with bias so that it’s not recording what we think it’s recording. ...
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