Machine Learning/AI foundations Portfolio Project

Please review my portfolio project for the Machine Learning/AI foundations course.

In this project I analyze a restaurant tip dataset on Kaggle.com found here:
Restaurant Tips Dataset | Kaggle

…and evaluate the predictive power the dataset’s variables have on the tip percentage a customer leaves, using a linear regression and a Naive Bayes classifier (after converting the tip percentages into categorical data).

I’ve concluded none of the dataset’s variables (gender, smoker, meal time, day of week, party size and plate price) offer any predictive power, after measuring the ML model’s accuracy using the dataset.