Category: Data Science
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Meta-Analysis: Combining Many Results into One
How marketing impacts firm value is an important question facing for-profit businesses. In an ambitious paper Conchar, Crask and Zinkhan (2005) examined this. they did a meta-analysis: combining many results into one. Meta-Analysis Seem Like Hard Work The hard work involved in this paper is impressive. The authors looked at 88 studies of advertising and…
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The Danger of Data Mining
Is data analysis leading to bigotry? It is a sensitive subject. Data enthusiasts (and I’d probably be in this camp) hope analysis can get rid of silly ideas. After all when we get better information we will be able to combat old prejudices. I am genuinely optimistic. Still there is a major problem where your…
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Behaviourally Informed Government Policy
In a companion piece to the article published on the BEAR (Behavioural Economics In Action at Rotman) website Dilip Soman, Katie Chen, and myself have an article in the Spring issue of the Rotman Management magazine. This is an issue completely dedicated to behavioral insights. It has some major academic names in the field — Richard Thaler, George…
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Why Not Test?
People love appearing to have knowledge. Often they are less careful about working out whether what they are saying makes sense. A concern I have is that we often claim to know much more than we actually know. We have some hunches or ideas and these gain the status of facts in our minds. Clearly this influences…
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Measuring The Impact Of Marketing On Wall Street
Bernd Skiera, and a couple of colleagues, have a paper that considers a relatively recent wave of research in marketing academia. They tackle event studies. These look at the impact of specified “events” on the value of a firm. Measuring the impact of marketing on Wall Street. Marketing Events Clearly marketers tend to concentrate on marketing events.…
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Star Wars, The US Constitution, And The Dangers Of Not Rewriting When Necessary
Cass Sunstein’s book — The World According to Star Wars — is a must for Star Wars fans who are also interested in behavioral economics/law/public policy. This is probably a surprisingly big intersection. What do we find out about Star Wars and the US constitution? Star Wars: Why? I must confess to not seeing the appeal of…
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Improving Public Policy Through Testing
David Halpern is an interesting character. Originally an advisor to Tony Blair’s Labour government he went on to establish the U.K.’s Behavioural Insights for David Cameron’s Conservative government. His CV makes sense to me given what he specializes in. His aim is to make government policy better. The politicians decide what should be done and Halpern tries to ensure it…
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Conducting Business Tests
We should be conducting business tests to have more confidence we are doing the right thing. Small And Big Decisions In business decisions are often taken “without having any real evidence to back them up” (Davenport, 2009, page 69). This is a source of great frustration to me, (and many academics). To be fair sometimes there…
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Showing A Problem Does Not Equal Demonstrating A Worsening Problem
Cathy O’Neil has a great book on big data, Weapons of Math Destruction, but one with a fundamental flaw. The flawed claim is made in the book’s subtitle and permeates throughout the book. The subtitle is: “How Big Data Increases Inequality and Threatens Democracy”. I could find no significant evidence of big data increasing inequality in the book. She shows…
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Is Math Racist?
Cathy O’Neil’s book – Weapons of Math Destruction – is an entertaining and informative read. She has done a great job of highlighting the challenges with math models. (I have one massive problem with the book but I’ll detail that next time, see here). First I’ll address the question on everyone’s mind: Is Math Racist? Math Models…
