The days when marketing people picked the color of the brochure are over. It’s all data all the time. Pricing algorithms, loyalty programs, market research, purchase frequency and velocity, maximizing shelf space or facings, quantifying the value of an incremental brand extension vs. investing more in the existing product. Marketing people used to throw stuff on a dart board; now it’s all data and regressions and analysis.
A marketing person whose math stopped at trig is going to have a hard time convincing an interviewer that they’ve got enough analytical chops to survive in marketing.