XKCD is always good, but the statistical references are often quite insightful!
Statistics and sampling are fundamental to almost all of our understanding of the world. The world is too big to measure directly. Measuring representative samples is a way to understand the entire picture. Popular and academic literature are both full of examples of poor sample selection resulting in flawed conclusions about the population. Some of […]
I was looking for an XKCD comic to insert into a presentation on insurance regulations. Yes, I do that. I came across a comic I hadn’t seen before and that also illustrates a fundamentally important point. Enjoy.
I’m not sure about this fascinating article on birds evolving to avoid cars in the US. The story is that fewer cliff swallows are being killed on the roads AND those birds killed have longer than average wings. The argument here is that longer wings make for less agility, making the birds more likely to […]
Life Expectancy is going up. In general. But what really matters isn’t the general but the specifics. I know it’s hard to work through maths and actual calculations, but it doesn’t help if you run your analysis off slogans. US Life Expectancy is going up. But not as much “at retirement” as it is up […]
Here is another interesting story with a gender angle. A study shows that stockholders in companies with women in the Board achieved better returns than those without. The obvious and likely correct point is that women add something valuable to the Board and is the company performs better. Diversity is a good thing in general, […]
More women than men get home loans in South Africa up to the age of 39 or so. This is fascinating in itself and needs further analysis. Unfortunately, the analysis in the linked story misses a key point. 30 year old women and 50 year old women differ in that there is a 20 year […]
Some serious research, pointed out to me by FT Alphaville, showing that the 2010 Soccer World Cup had a marked impact on JSE trading volumes, patterns and correlation with global markets. I’m not sure what to do with this information, but it’s remarkable all the same.