Mean and median ethnicity pay gap
The median pay gap is the difference between the midpoints in the ranges of hourly earnings of BME staff and white staff. It takes all salaries in the sample, lines them up in order from lowest to highest, and picks the middle salary. We believe this is a more representative measure of the pay gap at Imperial because it is not affected by outliers – a few individuals at the top or bottom of the range.
The mean ethnicity pay gap is the difference between the average hourly earnings of BME staff and white staff.
The main reason for both of these gaps is that we have more white staff than BME staff in senior, more well-paid roles.