senior-data-scientist

World-class data science skill for statistical modeling, experimentation, causal inference, and advanced analytics. Expertise in Python (NumPy, Pandas, Scikit-learn), R, SQL, statistical methods, A/B testing, time series, and business intelligence. Includes experiment design, feature engineering, model evaluation, and stakeholder communication. Use when designing experiments, building predictive models, performing causal analysis, or driving data-driven decisions.

1.41x

Quality

60%

Does it follow best practices?

Impact

68%

1.41x

Average score across 3 eval scenarios

Securityby

Passed

No findings from the security scan

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Evaluation results

69%

33%

A/B Test Design for Checkout Funnel Optimization

Experiment design with provided scripts

Criteria

Without this skill

With this skill

Uses experiment_designer script

100%

Correct script flags

100%

Power analysis script has type hints

100%

Alpha = 0.05 used

100%

Power = 0.80 used

100%

Monitoring plan present

100%

MLflow or W&B mentioned

Uptime/error rate target

Latency SLO referenced

100%

Scikit-learn or statsmodels used

Batch processing mentioned

60%

Customer Churn Prediction Feature Pipeline

Feature engineering pipeline with reliability patterns

Criteria

Without this skill

With this skill

Uses feature pipeline script

Correct script flags

Type hints in pipeline

100%

Batch processing design

75%

100%

Retry logic present

Circuit breaker or failure design

42%

57%

Data quality validation

100%

Comprehensive tests written

100%

Pandas or NumPy used

100%

Comprehensive logging

100%

10x scalability noted

Feature catalog complete

100%

77%

Production Readiness Review for Credit Risk Model

Model evaluation with security and monitoring

Criteria

Without this skill

With this skill

Uses model eval script

Correct script flags

PII anonymization addressed

100%

Data encryption addressed

100%

GDPR/CCPA compliance

100%

Latency SLOs specified

100%

Error rate target specified

100%

MLflow or W&B for tracking

62%

100%

Canary or feature flag deployment

100%

Type hints in eval script

100%

Comprehensive logging in code

100%

SSN/PII not logged raw

100%

Repository: foryourhealth111-pixel/Vibe-Skills
Path: bundled/skills/senior-data-scientist/SKILL.md
Commit: ddcaa2a

Evaluated: 6 months ago
Agent: Claude Code
Model: Claude Sonnet 4.6

Table of Contents

A/B Test Design for Checkout Funnel Optimization Customer Churn Prediction Feature Pipeline Production Readiness Review for Credit Risk Model

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