Data Chats Podcast
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 ...
Blog posts
2023
2022
Data Analysis for Business Analytics
A complete Data Analysis package for Business Analytics
2021
Interpreting a coefficient in a simple OLS regression
Interpreting univariate OLS coefficients
A simplified notation for OLS regression
A simplified regression notation
2020
On picking the Viridis color scheme
The economist meets visual arts
Goalkeepers, random play and multiple testing
Random action may be a well thought out strategy. Sometimes you would want to act randomly to make your next action hard to predict. This is particularly imp...
Selection bias – a war story
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
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
There are many variations on random sampling that aim to further improve representation or reduce the costs of data collection.