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Nigel Marriott's Blog

An independent statistician using data to understand our world and to predict the future

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UK Economy Tracker #5 – 2019 Q2

August 13, 2019 By Nigel Marriott

Q2 was a mixed picture for the UK economy.  Quarterly GDP fell for the first time since whilst Economic Inactivity fell to record lows and Wage Inflation was the highest since the 2008 recession.

[Read more…] about UK Economy Tracker #5 – 2019 Q2

Filed Under: Archive Tagged With: Economy Tracker, Presenting data, Trackers, UK Economy

Pay Gaps #11 – A median sized problem with 10 solutions from the RSS

August 7, 2019 By Nigel Marriott

The Royal Statistical Society (RSS) and I have published two articles to help employers better calculate and interpret their gender pay gaps.  The first article lists 10 recommendations to improve the quality of gender pay gap reporting, the second is an article in Significance magazine which explores in more detail, two of the recommendations concerning medians and quartiles.

[Read more…] about Pay Gaps #11 – A median sized problem with 10 solutions from the RSS

Filed Under: Diversity Tagged With: data quality, Gender Pay Gap, Median, Quartiles, Royal Statistical Society, Significance

UK Weather Tracker #30 – July 2019

August 6, 2019 By Nigel Marriott

The UK set a new record for maximum temperature of 38.7 degrees in Cambridge on 29th July.  Other than that, the UK weather was unremarkable for the month overall, other than being warmer than normal.  This goes to show that whilst individual days can be remarkable, it is rare that this is sustained.

[Read more…] about UK Weather Tracker #30 – July 2019

Filed Under: Archive Tagged With: Presenting data, Weather, Weather Tracker

Pay Gaps #10 – Should the UK introduce Ethnicity Pay Gap Reporting?

July 18, 2019 By Nigel Marriott

After two years of mandatory gender pay gap reporting, there is increasing pressure to bring in pay gap reporting for other protected characteristics.  At the moment, ethnicity is receiving the greatest attention and a number of politicians are calling for the introduction of mandatory ethnicity pay gap reporting.

In this post, I will explain why I am opposed to an ethnicity pay gap reporting process which simply replicates the gender pay gap reporting process.  In a future post, I will explore what an ethnicity pay gap reporting process should look like if parliament decides it wants to make this law.

[Read more…] about Pay Gaps #10 – Should the UK introduce Ethnicity Pay Gap Reporting?

Filed Under: Diversity Tagged With: data quality, Ethnicity Pay Gap, Gender Pay Gap, Statistician

Ethnicity #1 – Is all white alright?

July 18, 2019 By Nigel Marriott

You have just started work for a new employer and with you joining, the company now has 25 employees.  All are white including you.  Would you raise your eyebrows at that?

[Read more…] about Ethnicity #1 – Is all white alright?

Filed Under: Diversity Tagged With: Bayes rule, Binomial Distribution, Discrimination, Ethnicity, Probability, Workplace diversity

Stats Training Materials – Sampling & Surveys

July 17, 2019 By Nigel Marriott

The core expertise that Statisticians offer to the world is drawing conclusions from small samples.  Therefore, knowing how to design surveys, estimate the right sample size, decide on the right way to ask the question or measure a property are all essential skills for any statistical thinker.  The skills you need to be competent in Sampling & Surveys are best captured by my Survey Wheel.

[Read more…] about Stats Training Materials – Sampling & Surveys

Filed Under: Stats Training Tagged With: data quality, Measurement Error, Opinion Polls, Polling, Sample size, Sampling, Segmentation, Surveys

Stats in the News #3 – Did I change Bath’s Clean Air Zone plans?

July 15, 2019 By Nigel Marriott

The city of Bath is among a number of cities in the UK tasked with reducing Nitrogen Oxide (NOx) emissions.  NOx pollution is thought to contribute to poor health and the government has required clean air plans from the relevant local authorities to be in place before 2021.  I had no idea that this would result in my statistical expertise being needed to answer a political row over the BathBreathes2021 plans to charge cars driving into Bath and you can read my report to see what my answer was!

[Read more…] about Stats in the News #3 – Did I change Bath’s Clean Air Zone plans?

Filed Under: Forecasting, Misc Tagged With: BathBreathe2021, Evidence, Expert Witness, Forecasting model, Pollution, Spatial Statistics

Pay Gaps #9 – How to close your gender pay gap with DMAIC

July 5, 2019 By Nigel Marriott

So you’ve measured your gender pay gap (correctly I hope!) but you don’t know what to do next?

You are not alone, many employers are still getting their heads around how to interpret their pay gaps and are struggling to work out what it means for them.  One outcome is that many consultants are out there waiting to advise you and among them are statisticians like me.  But what exactly is it that statisticians bring to the party compared to other consultants?  One answer is that statisticians use DMAIC to help organisations improve the quality of their products, services and processes.

[Read more…] about Pay Gaps #9 – How to close your gender pay gap with DMAIC

Filed Under: Diversity Tagged With: DMAIC, Gender Pay Gap, QIS, Quality Improvement, Royal Statistical Society, Six Sigma, Statistician

UK Weather Tracker #29 – June 2019

July 4, 2019 By Nigel Marriott

The Met Office began the month with forecasts of a really cold June and ended the month talking about heatwaves.  This meant June ended up being unremarkable on average.

[Read more…] about UK Weather Tracker #29 – June 2019

Filed Under: Archive Tagged With: Presenting data, Weather, Weather Tracker

Pay Gaps #8 – My Evidence to the Treasury Select Committee

June 8, 2019 By Nigel Marriott

On June 5th 2019, I had the privilege of being able to talk to the Treasury Select Committee about the “Effectiveness of Gender Pay Gap Reporting“.  My name was put forward by the Royal Statistical Society and we spent an hour discussing a number of issues with a particular focus on the Finance sector.

[Read more…] about Pay Gaps #8 – My Evidence to the Treasury Select Committee

Filed Under: Diversity, Featured blog Tagged With: Evidence, Gender Pay Gap, Parliament, Statistical Training

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