For the Retail Industry, an example of relevant practical project is as below:
Retail Chain Stores – Walmart – Using Big Data for Sales Prediction for Stores & Impact of Economic Factors – Big Data
(Courses: Data Science Online Training – R Programming, & Data Science with Python Course)
Predict sales for retail chain stores of Walmart, & impact of promotional markdown events. You would check if macroeconomic factors have an impact on sales.