Articles about statistics

Everybody Lies — Seth Stephens-Davidowitz

Google remembers every search anyone does. If you combine all that data in the right ways, you can come up with a lot of results, theories and conclusions. That’s what Seth Stephens-Davidowitz does in this book. The title comes from one of his conclusions: people say they do things (in surveys and so on) but the aggregated search data from Google shows that a large number of them are lying. It’s a clever idea and he draws out a lot of interesting material (enough to fill a book!). If you’ve ever typed “why does my cat” into Google just to see what suggestions pop up, then this book is for you.

This review is about , , . Bookmark the permalink. Leave a comment

Proofiness – Charles Seife


This is a great survey of all the ways to lie with statistics, and how to avoid being fooled by them. So many of the things we read and hear are based on numerical data, and often it’s hard to argue with them — “the numbers don’t lie”, they say. And it’s true: numbers don’t lie. But people lie, sometimes using words and sometimes using numbers.

There are sections on politics, discussing gerrymandering and also counting election results. Seife’s analysis of the 2000 US presidential election is excellent, laying bare the frankly ridiculous voting systems in use. He also reveals what the actual result should have been, after all the court cases and recounts. His conclusion surprised me, but it is actually the only sensible option even though it would probably have caused outrage.

Continue reading

This review is about , , , . Bookmark the permalink. 1 Comment

Low voter turnout favours the Right

Does low voter turnout favour right-wing political parties? Common wisdom says it does: for example, non-voters tend to be poorer people who would have favoured left-wing parties. In the recent New Zealand general election, the centre-right National Party won an absolute majority in parliament, but only about 77% of eligible voters actually voted. I found some interesting data on non-voters and used it to see whether the result would have been different if all eligible voters had exercised their democratic duty. The results:

1. Yes, low voter turnout favours the right-wing parties.

2. If everyone had voted, the result would have been much closer: the Labour Party may have been able to form a government. Continue reading

This idea is about , , . Bookmark the permalink. Leave a comment

Test Cricket’s greatest all-rounders

Billy Bates, the best test cricket all-rounder EVAR.Back in the 1980s four all-rounders dominated the world test cricket scene: Ian Botham from England, Kapil Dev from India, Imran Khan (now a very prominent politician) from Pakistan, and Richard Hadlee from New Zealand. Much ink was spilled in the debate on who was the best, and how they compared with great all-rounders from the past such as Australia’s Keith Miller and Garfield Sobers from the West Indies. Many years ago I came up with a good way of evaluating all-rounders based on their statistics, and finally I have been able to crunch the numbers and come up with the results.

I should clarify a few things. This whole article relates only to men’s test cricket, though it would also apply to any other format. More importantly, the whole idea of rating players based on statistics is obviously flawed, as stats don’t capture everything about a player. But as long as we allow for that and don’t try to be too precise, I think we can gain some useful and interesting insights.

Continue reading

This idea is about , , . Bookmark the permalink. Leave a comment