University of Oxford
Gender pay gap report
Difference in hourly rate
About mean and median
The mean hourly rate is the average hourly wage across the entire organisation so the mean gender pay gap is a measure of the difference between women’s mean hourly wage and men’s mean hourly wage.
The median hourly rate is calculated by ranking all employees from the highest paid to the lowest paid, and taking the hourly wage of the person in the middle; so the median gender pay gap is the difference between women’s median hourly wage (the middle paid woman) and men’s median hourly wage (the middle paid man).
Proportion of women in each pay quartile
Pay quartiles are calculated by splitting all employees in an organisation into four even groups according to their level of pay. Looking at the proportion of women in each quartile gives an indication of women's representation at different levels of the organisation.