Capstone project · about 90 minutes
Sales Forecasting with Backtesting 📈
Decompose two years of sales into trend and seasonality, forecast six months ahead, and prove the model beats a naive baseline.
Anyone can draw a line through some numbers. What makes this a professional piece of work is the backtest: you hold back the last six months, forecast them from what came before, and compare your model against the dumbest possible baseline. If it cannot beat "the same as last year", it does not ship. That discipline…
This is a Pro project. Six portfolio projects are free, so you can see how they work before deciding.