Blog posts


Data Chats Podcast

2 minute read

I did a podcast with Chris Richardson of Pragmatic Institute, a California based data science education institute a while back, it is out now. Data Science ...




Selection bias – a war story

2 minute read

During the Second World War, in a secret Manhattan building, statisticians and mathematicians were recruited from across the U.S.A. to carry out data analysi...

Some history of sampling

4 minute read

Statistical enumerations of land, people, and property have taken place in many of the better organized empires and states since Babylonian times. These all ...

Variants of random sampling

1 minute read

There are many variations on random sampling that aim to further improve representation or reduce the costs of data collection.