Data Science ยท Chapter 42 of 43

Ethics & Privacy

Data scientists work with people's data. Follow the principles: consent, minimisation, purpose limitation, security.

Audit models for BIAS across gender, race, age and other sensitive groups.

Example 1 (python)
# Slice metrics by demographic group
# to check for disparate impact

Fairness starts with per-group metrics.

Example 2 (python)
# Anonymise/aggregate PII; consider differential privacy

Modern privacy tooling.

Key points

  • Consent, minimisation, purpose, security.
  • Bias comes from biased data.
  • Audit outputs across groups.
  • Never deploy without a fairness check.
๐Ÿ’ก Note: A '99% accurate' model that discriminates against a demographic is not a success โ€” it's a legal and ethical failure.

๐Ÿ“ Quick Quiz

1. Model bias mainly comes from:

2. PII stands for:

3. Responsible ML requires: