Statistician examination is divided into three levels: primary qualification, intermediate qualification and advanced qualification examination. The primary qualification examination subjects include statistics and basic knowledge of statistics as well as professional knowledge and practice of statistics. The intermediate qualification examination subjects include Basic Statistics Theory and Related Knowledge and Statistical Work Practice, while the advanced qualification examination includes Advanced Statistical Practice. Statistician examination is a non-rolling examination, and those who take part in the statistician examination must pass all the examinations at one time before they can obtain the corresponding statistical professional and technical qualification certificate.