I have a spotted an incorrect median gender pay gap published by a well known name in a certain industry. They shall remain nameless for now since I am trying to get them to accept their error and publish a new gender pay gap report on their website. I know they have made an error because their published data violates the laws of mathematics as I will explain in this blog. All it takes to spot such an error is a simple calculation you can do in your head and an understanding what the median measures.
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.