Updated README.md, few bug tweaks, adding regression_results.ipynb

api/app/museum_api.py

@@ -8,14 +8,6 @@ Run locally (from the repo root):
 or run this file directly (e.g. from the IDE):
 
     python api/museum_api.py
-
-Or with a DataFrame you already have in memory:
-
-    from api.museum_api import create_app
-    import uvicorn
-    uvicorn.run(create_app(df), port=8000)
-
-Expected columns: Name, Visitors, City, Country, Population
 """
 from __future__ import annotations
 
@@ -252,7 +244,7 @@ def create_app(
         return [Prediction(population=p, predicted_visitors=float(v))
                 for p, v in zip(req.populations, preds)]
 
-    @app.get("data")
+    @app.get("/data")
     def data():
         """Every row the model was fitted on, with its prediction."""
         m = get_model()