The world is becoming more data-intensive every day (google search for "smart cities") and it would only become more so. Big data has applications in finance, IT, and anything that involves massive databases.

If you're interested in data analytics, then go for it. You can get a job with this degree.

Besides, the IT sector is more open to hiring private uni grads because they value REAL SKILLS over certificates.

If you take a math degree at a private uni, I don't think employees will be interested in hiring you to be honest.