Individual skill
senior-data-scientist
Design experiments and analyze tabular data: A/B tests, causal inference, feature engineering, model evaluation. Use whenever the user asks how to set up or read an A/B test, whether a change caused a lift, which features to build, or how good a model is.
engineering-team/skills/senior-data-scientist/SKILL.md
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# Senior Data Scientist
World-class senior data scientist skill for production-grade AI/ML/Data systems.
## Core Workflows
### 1. Design an A/B Test
```python
import numpy as np
from scipy import stats
def calculate_sample_size(baseline_rate, mde, alpha=0.05, power=0.8):
"""