The virtual irrelevancy of population size to required sample size

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 […]

US Life Expectancy and the dangers of superficial analysis

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 […]

More on gender and analytical problems

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, […]