Hey

The courses that you mentioned that are masters in mathematics, mathematical statistics and economics are all popular courses and high demand. The scope is somewhat similar for all these as they candidates who have a masters degree in all the respective courses are needed in field of applied sciences, finance and investment, statistical department etc.

Hence, it is not a one course that can have a better placements but an overall academic record of a students that will make him/her get placed in a company.

Hope you understood. Thank you.