The headline is simple. Older voters defeated the Scottish independence referendum, as illustrated by this graph breaking down voter intentions.
But data journalism can be a tricky thing, and graphs can easily misleading unless designed with a bit of thought. Take a look at the first bar. It illustrates the voting intentions of 16 and 17 year old voters. A two-year gap. Then there’s 18-24, a seven year group. Then ten-year steps until we reach 64, then “65+”.
Now look again. There’s no information about varying turnout rates, and even with 84% overall voting, I’m willing to bet turnout increased with voter age. Yet there’s a graph that gives the visual impression that over 65s (a cohort that covers a 30-40 year age range) is the same size as one for 16 and 17 year olds.
The graph, whether intentionally or otherwise, gives the impression of a small minority overruling the wishes of a majority.
And that annoys me.