Sunday, December 31, 2017

HARK! - flawed studies in nutrition call for credibility revolution -or- HARKing in nutrition research

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There was a nice piece over at the Genetic Literacy Project I read just recently:  Why so many scientific studies are flawed and poorly unde...
Thursday, August 24, 2017

Granger Causality

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"Granger causality is a standard linear technique for determining whether one time series is useful in forecasting another." (Irwi...
Monday, August 7, 2017

Confidence Intervals: Fad or Fashion

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Confidence intervals seem to be the fad among some in pop stats/data science/analytics. Whenever there is mention of p-hacking, or the ills...
Friday, July 21, 2017

Regression as a variance based weighted average treatment effect

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In Mostly Harmless Econometrics Angrist and Pischke discuss regression in the context of matching. Specifically they show that regression p...
Wednesday, July 12, 2017

Instrumental Variables and LATE

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Often in program evaluation we are interested in estimating the average treatment effect (ATE).  This is in theory the effect of treatment o...
Tuesday, July 11, 2017

The Credibility Revolution in Econometrics

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Previously I wrote about how graduate training (and experience) can provide a foundation for understanding statistics, experimental design, ...
Monday, July 10, 2017

The Value of Graduate Education....and Experience

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What are some of the additional benefits of graduate study? What if you just skip the time, money and energy spent in graduate school and we...