Yes, you can do a master’s in math in Oxford with an online bachelor’s degree in math from an accredited university. However, it is important to note that the admissions requirements for the MSc in Mathematical Sciences at Oxford are very competitive. In addition to a strong academic record, you will need to demonstrate a strong interest in mathematics and a commitment to research. You may also want to consider taking some additional courses in mathematics or statistics before applying.

Here are some tips for increasing your chances of being accepted to the MSc in Mathematical Sciences at Oxford:

• Get a strong academic record. This means earning high grades in your undergraduate courses, especially in mathematics and statistics.
• Demonstrate a strong interest in mathematics. This could involve participating in research projects, attending math conferences, or publishing articles in math journals.
• Take additional courses in mathematics or statistics. This will help you to strengthen your math skills and demonstrate your commitment to the field.
• Write a strong personal statement. Your personal statement should explain why you are interested in studying mathematics at Oxford and what you hope to achieve by doing so.
• Get strong letters of recommendation. Your letters of recommendation should come from professors or other professionals who can attest to your academic abilities and your commitment to mathematics.

If you follow these tips, you will be well on your way to being accepted to the MSc in Mathematical Sciences at Oxford.