0039 785 39785108 qa 1

The task

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): - data.csv Installed: pandas, numpy, matplotlib, seaborn, scipy, scikit-learn, statsmodels, tabulate, sqlite3, plotly (pip install more if needed). Question: What is the highest test accuracy achieved when varying the n_neighbors parameter, and which value of K achieved this maximum accuracy? Work it out step by step — inspect the data first (head, shape, dtypes), then compute. Answer as: <accuracy>, K=<value> (comma-separated, accuracy as a fraction with six decimals, K label first). 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.