Even when they’ve been told not to:
This is undoubtedly reflected at a national level: women working full-time in the UK earn on average 13.9% less than men,
From the Fawcett Society:
The current overall gap for full time workers is 13.9%
They’ve been told, again and again, that the mean is misleading, it is the median – just under 10% – which should be used.