Econometric Sense

I recently undertook a project where a colleague had about 12 .csv files that they wanted to merge. Each file had a common (key) variable ...

 (Venn Diagram by Drew Conway ) Below is a great article on the rise of data science. Given my background in applied economics, and my cu...

Time Series Analysis Exponential Smoothing: S = α Y t +  (1- α ) Y t-1                S =  portion of current average + portion ...

BIOMETRICS COMPARING TWO MEANS : Xbar 1 – Xbar 2 / S x1 – S x2 ~ t  can’t define numerator for >2 means ANALYSIS OF VARIANCE:...

The General Mixed Model: Y  = Xβ + Z α + e             (1) β =  fixed effects co-efficient vector X = fixed effects model matrix ...

In a previous post I discussed how IVs and 2SLS can be used to correct for simultaneity bias in systems of simultaneous equations . 2...

Simultaneous Equations (see also Instrumental Variables ) Simplifying the notation, let’s assume we have the following system of s...