1)GPA and GT
For undergraduates, GPA & gtGT and GPA are always the most important factors. The general bottom line of American university GPA is 3.0, with a minimum of 2.75. As long as your GPA is above 3.0, you have a chance to get an offer, but if you want to get a scholarship below 3.5, don't even think about it ~ ~ ~
Although GT is not the decisive factor for admission, the higher the better, especially for those applicants whose GPA is not outstanding, a high-scoring GT should be able to make up for it, but a low-scoring GT does not mean that your chances of winning the full prize are reduced. For the bottom line of GT, it is suggested that GRE verbal should not be less than 400, Verbal+Quantitative should be greater than 1000, and analytical writing should not be less than 3.5(GMAT should not be less than 650). About TOEFL, it's better to be higher than 100, but students at 90- 100 can rest assured that you can apply for professors in most schools to let you do experiments and research. They don't care much about a good person in English test.
2) Academic background: American graduate schools attach great importance to the applicant's "research ability" and play a limited role in undergraduate application, social practice activities, volunteers, student associations and other part-time jobs, but if there are academic papers in international awards and academic competitions, it will play a icing on the cake. Paper makes you stand out in all applications. When other applicants stand out with high GPA, you have proved to the Admissions Committee that you have research ability. It is best to publish SCI papers in English, which not only proves that you have the research ability, but also proves that you have passed the English writing exam and can write articles for future tutors ~ ~ ~
A strong recommendation letter will play a considerable role in the application, but this recommendation letter should be mainly academic ~ ~ ~
3) About changing majors. Information and computing science is applied mathematics, which belongs to the basic theoretical discipline. Theoretically, it can be transferred to all business, economics and even engineering majors based on mathematics, such as marketing, economics, accounting, automation, financial analysis and so on. But there are three principles:
The first principle is similarity and intersection, that is, the two majors are related to cross-disciplinary or professional background. In principle, there is no obstacle for science and engineering to transfer to business and management disciplines, and mathematics, as the necessary foundation of all disciplines, is also easy to transfer. But in order to apply more easily, it is best not to span too much ~ ~ ~
The second principle is to prepare in advance. In other words, when the span of changing majors is relatively large, you must be prepared in advance. For example, take some courses related to the major you want to apply for at school in advance. If you have graduated, although you can't attend classes, you can use part-time jobs or internships in related majors to accumulate some work experience.
The third principle is to pay attention to application. In the application materials, explain why you want to cross-major, explain from several aspects your preparation for the learning experience of the major you want to study, your research on the major you want to study now, and the importance of this major to your future life, so as to convince the professor that you really like this new major and have the ability to study it, which is more conducive to applying for a good school ~ ~ ~
Oh ... by the way, if you want to change careers, you may have to take GMAT ~ ~ ~