Spot the mistake

I came across this rather fun little study: This experiment tested the assumption that music plays a role in sexual selection. Three hundred young women were solicited in the street for their phone number by a young male confederate who held either a guitar case or a sports bag in his hands or had no […]

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Publication bias

An interesting analysis was recently published showing that the Russell group of Universities have a strong tendency to publish research with significant findings only. Actually a ‘strong tendency’ is an understatement. The analysis found, for example, that researchers from the University of Birmingham published 119 pieces of research during the study period of which only 9% […]

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Chi-squared test

At the ATP conference a teacher asked me whether AQA would set an exam question about the chi-squared test where a directional hypothesis had been used. The general view amongst statisticians is that you can only use a two-tailed test with chi-squared. I put this question to AQA who responded ‘Students would not be required […]

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New research on the effects of day care – not all it seems

In the last month a report appeared in the Daily Mail entitled ‘ Putting baby in nursery could raise its risk of heart disease because it sends levels of stress soaring ‘. This conclusion is based on a report by Aric Sigman , a psychologist who has previously been attacked by Ben Goldacre for his bad science (see here ). Sigman’s day care claims have come in for a blistering attack by Bishopblog ‘How to become a celebrity […]

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