Prerequisites Prospective students applying to the Ph.D. in Statistics program generally have the following mathematics background. Graduate Record Examination scores (quantitative, verbal, and analytical) GRE scores are considered optional (but recommended) for Spring 2021 and Fall 2021 applicants due to COVID-19. Unofficial undergraduate transcripts (and graduate, if applicable) Three letters of recommendation TOEFL scores should also be included when appropriate All documents should be uploaded online with your application. It is not necessary to mail in any paper materials. Official transcripts are required only after admission to the program. The TOEFL IBT Home. A minimum score of 90 is required. IELTS Indicator. A minimum score of 7 is required. TOEFL, at least 600 on the paper-based TOEFL or score 250 on the computer-based TOEFL. In general, applicants should have at least a 3.0 (B) grade point average, or the equivalent, in their undergraduate work.