On 30th September 2020, CL:AIRE (the industry body for the land contamination & remediation sector) published new professional guidance for “Comparing Soil Contamination Data with a Critical Concentration“. The 46-page document advises how to use statistics when assessing land contamination and deciding whether it is safe for development. I was the lead author of the guidance and I spent 4 years working with CL:AIRE’s steering committee on what the guidance should cover. The 4 years were bookended by statement & editorial published by the ASA (American Statistical Association) on the use & misuse of P-Values in 2016 & 2019 respectively and in writing this guidance I felt was I an ambassador for turning those into something that could used by non-statisticians to make real life decisions that have an impact on us all.
Pay Gaps #14 – Gender Pay Fingerprints are better than Gender Pay Gaps
Recently, a lot of people have been making incorrect claims about what a gender pay gap tells you. I have been pointing out these errors but in doing so, I am conscious I come across as a pedant or a negative voice. The problem is that the official gender pay gap measure (the difference between the median man and the median woman) is just a single number and that single number does not capture the full nuance of what is going on. I have decided it is time to introduce the Gender Pay Fingerprint to the world as an alternative and going forward, I will be encouraging people to use this instead.
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