Benefits of a masters in mathematics for a Phd. [D]

I'm about to finish my undergraduate degree in Computer Science and I made sure to take up as many ML related courses I could've in my final and previous semester.

Data Analysis

Statistical Machine Learning

Data Mining

Artificial Intelligence (the Norvig book type)

Now for some weird reasons, my options to a masters degree in Data Science or ML etc are practically non existent.

So, I'm kind of forced to take up a masters in either mathematics or mathematics and …

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