Blog Archives

Interactive RTutor Problemsets via RStudio Cloud

Interactive RTutor Problemsets via RStudio Cloud

I just learned about RStudio Cloud (see https://rstudio.cloud/) that allows to simply run RStudio instances from your browser. Moreover, you can simply set-up RStudio projects that other users can simply copy and use themselves. RStudio Cloud is still in alpha and currently one can freely register to use it. I have set up a project that allows you to simply...

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P-Values, Sample Size and Data Mining

P-Values, Sample Size and Data Mining

Recently, a paper was presented at our university that showed a significant effect for a variable of interest but had a relatively small number of observations. One colleague suggested that we should consider the significance of the results with care since the number of observations was fairly small. This ignited some discussion. Given that the significance test computed exact p-values,...

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Data on energy consumption and CO2 emissions

Data on energy consumption and CO2 emissions

I like to start my courses in energy economics and environmental economics by asking some question like Which energy source, e.g. gas, coal, nuclear, oil, renewables had the largest absolute increase in world wide energy consumption between the years 2000 und 2016? And then show some data. Below you can see an updated version of a googleVis visualization of...

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Some Tools for Writing Shiny Apps

Some Tools for Writing Shiny Apps

Recently, I have written and hosted several multi-user Shiny apps. One example, is Taddle that runs on my server at http://taddle.mathematik.uni-ulm.de. Taddle is a multi-user shiny app that offers a free and simple way to allocate seminar topics. (Nex...

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RTutor: Water Pollution and Cancer

December 4, 2017
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RTutor: Water Pollution and Cancer

One very important benefit of stronger environmental protection is to reduce the damaging effects of pollution on human health. In his very interesting article “The Consequences of Industrialization: Evidence from Water Pollution and Digestive Cance...

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RTutor: Wall Street and the Housing Bubble

November 1, 2017
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RTutor: Wall Street and the Housing Bubble

It is widely recognized that aggressive securitization of housing loans played a decisive role in the creating of a house price bubble in the US and the subsequent financial crisis. An open question is in how far financial experts on securitization wer...

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Economic time series data quiz as a shiny app for mobile phones

October 22, 2017
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Economic time series data quiz as a shiny app for mobile phones

Nowadays, a lot of interesting time series data is freely available that allows us to compare important economic, social and environmental trends across countries. I feel that one can learn a lot by surfing through the data sections on the websites of...

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RTutor: Pollution Reduction by Wind Energy

October 20, 2017
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RTutor: Pollution Reduction by Wind Energy

How much pollution reduction do we get from a MWh electricity produced by wind or solar power? In principle, this corresponds to the avoided pollution of a fossil fuel plant that reduces its output due to the higher production of renewable electricity....

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RTutor: Emission Certificates and Green Innovation

RTutor: Emission Certificates and Green Innovation

Which policy instruments should we use to cost-effectively reduce greenhouse gas emissions? For a given technological level there are many economic arguments in favour of tradeable emission certificates or a carbon tax: they generate static efficiency ...

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RTutor: The effect of the TseTse fly on African Development

RTutor: The effect of the TseTse fly on African Development

What is the causal impact of the TseTse fly on historical and current development in Africa? Marcella Alsan studies this question in her fascinating article ‘The effect of the TseTse fly on African development’ in the American Economic Review, 2015...

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