Statistical Concepts

Stats Training Materials – Pay Gap Analytics

October 1, 2025 By Nigel Marriott

*** Updated with links B16 and P9, P10 and P11 for 3 presentations I have given recently on gender & ethnicity pay gap reporting. I have also added new sections I & J**

The 5 steps to closing a pay and/or representation gap are –

Define what success looks like i.e. where you want to be in the future
Measure where you are today
Analyse your data to understand why you are where you are today & what the key drivers are of your gaps
Implement actions which move you from where you are today to put you on the path to where you want to be in the future
Control the key drivers to ensure you are on the right track

All steps require the use of statistical thinking and statistical methods. Other skills and processes are also needed but they cannot succeed on their own without the help of statistical thinking.

Stats Training Materials – Basic Statistical Concepts

February 1, 2019 By Nigel Marriott

A sound grasp of basic statistical concepts is essential to have any hope of acquiring the mindset of a statistical thinker and to be able to use statistical methods. My introductory course “The 6 Concepts of Statistical Thinking” lays the foundations in the following.

Probability – the difference between conditional & absolute probability.
Risk – why it is an extension of probability and the importance of alpha (false positive) and beta (false negative) risk.
Expectation – how to summarise a dataset into one number which measures its location.
Variance – how to measure the spread of a dataset.
Distribution – how to describe the shape of a dataset.
Correlation – how to measure the relationship between two variables and understand the two golden rules of correlation.