The quantitative relationship and data analysis part of the test is too difficult for me. I have never learned math well. What should a survey expert do?
Only probability may require high school knowledge, and most others are elementary school knowledge (Olympiad), so it is not very difficult. The key is to be familiar with the problem-solving skills of these topics and do more problems. The key is to summarize, because there are many topics, but the types of questions are limited, and then they are all changed. . Come on, you can do it! !