a Ph.D. in Statistics to create a linear regression model in Excel Linear regression, logistic regression and k-means clustering, if you can get a project into

a Ph.D. in Statistics to create a linear regression model in Excel Linear regression, logistic regression and k-means clustering, if you can get a project into actual real-money production on one of those, you are already well ahead of 90% of data scientists. And these techniques are decades old!