Aug 23, 2013 — Dual Regression to Compare Functional Brain Networks — I want to talk about a method that is quite popular with functional network analysis, namely to define functional networks for a group of people, and then go back and identify the same (unique) network for an individual.  This technique... Read more

Aug 21, 2013 — Visual: Should I use a linear model? — I’ve read about this trick in two places, as a way to determine if the choice of a linear model for your data is a good one.  You can plot the residuals (the squared error terms) against each of the... Read more

Aug 18, 2013 — Correlation — Correlation is a measure of the extent to which two variables change together.  A positive correlation means that when we increase one variable, the other increases as well.  It also means that when we decrease one variable, the other decreases... Read more

Aug 18, 2013 — R (squared) Statistic — I remember making plots in middle and high school, and this curious r-squared statistic told me something about how well my data fit some regression plot.  I had no clue where this value came from, but I noticed that it... Read more