Job Recruitment Website - Job seeking and recruitment - How is the average level of calculated?

How is the average level of calculated?

Zhiyouji is the largest job search engine in China. It indexes the job information of 52 recruitment websites. The "average salary" in the station is based on the salary data released by the index company in the past year. Due to the stability of the position index, there may be deviations, which are for reference only.