Dave Armstrong

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Suspected ‘fake results’ in science

There is a concern that too many scientific studies are failing to be replicated as often as expected. This means that a high proportion is suspected …

Add P-values and Significance Levels to ggplots

In this article, we’ll describe how to easily i) <b>compare means</b> of two or multiple groups; ii) and to automatically add <b>p-values</b> and <b>significance levels</b> …

Coefficient Of Variation: A Better Metric To Compare Volatility

According to Modern Portfolio Theory, investment risk is defined by - and measured by - volatility. MPT posits that all investors are rational and …

R: Generalized Additive Model Selection

Marra, G. and S.N. Wood (2011) Practical variable selection for generalized additive models. Computational Statistics and Data Analysis …

Everything we could find out about Canada’s secret spy database

CSIS assured the minister that rules were in place to protect Canadians’ privacy.<p>CSIS assured the minister that rules were in place to protect Canadians’ privacy.<p>The details of exactly how the centre operates and to what end it has succeeded remains unclear.<p>That briefing never happened.

Three lessons in performance measurement from the British & Irish Lions

Data is transforming business and sport. But what data should we collect, how do we identify KPIs – and what decisions do human beings still need to take?<p>Stuart Lang, former Scotland Rugby Union international and a partner at Ernst & Young LLP, says: “Data analysis, when I played, was a notebook in …

Studying disease with R: RECON, The R Epidemics Consortium

For almost a year now, a collection of researchers from around the world has been collaborating to develop the next generation of analysis tools for …

Machine Learning Could Help When Sentencing Criminals - If Used Right | Articles | Big Data

The US Justice system is a big beast, with 350,000 cases passing through the courts each year. There are roughly 6.7 million adults under some form …

Can You Trust Your Data? Teasing The Truth From Big Data

Fake news. Brand safety. Ad blocking. Transparency. Four of the key topics to be addressed by various speakers at this year’s Cannes Lions International Festival of Creativity. In other words, more on conquering or at least managing the increasingly complex marketing ecosystem.<p>It’s not easy to get …

Taiwan retains top spot in Global Open Data Index

Taiwan retained top spot for the second year running among 94 surveyed countries in the latest Global Open Data Index published June 15 by U.K.-based …

Researchers Have Begun To Realize That Big Data Presents Big Problems

Don’t expect a joint statement of solidarity, but conservatives balking at a social science-driven administrative state and liberals flailing against …

Data Transparency Sounds Good in Theory, But in Practice?

The pressure on companies to be more transparent with their customers about the data they collect is ratcheting up.<p>On May 25, 2018, the European …

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