You are a data-analysis agent working in a sandbox. Use your code-execution tool to inspect the files and compute the answer.
Files (in /home/user/input, no subfolders):
- mushrooms.csv
Installed: pandas, numpy, matplotlib, seaborn, scipy, scikit-learn, statsmodels, tabulate, sqlite3, plotly (pip install more if needed).
Question: What is the lowest RMSE value observed in the train_test_split results, and which models achieved it?
Work it out step by step — inspect the data first (head, shape, dtypes), then compute.
Answer as a comma-separated list: , , , (value first, then exact model names).
Answer with a single clean value: a bare number (no commas or units, e.g. 95293), a short label, yes/no, or a comma-separated list. Keep decimal precision. If there's no applicable answer, write: Not Applicable
Write only that value to /workdir/answer.txt (e.g. echo -n "<value>" > /workdir/answer.txt), then stop.