# Titanic data attribution and licence

Dataset: Titanic Passengers and Crew: Demographics and Survival Data.
Author: Lukas C. Bossert. Version 1.0.1, 26 September 2026.
Exact version: https://doi.org/10.5281/zenodo.22983324
Collection DOI: https://doi.org/10.5281/zenodo.22967792
The Zenodo record declares the No Limit Public License (NLPL); its text is
preserved in NLPL.txt. The archived CSV files and SHA256SUMS are unchanged.
Original preparation notes identify Dennis Sun's educational Titanic CSV as
the direct source, accessed 25 September 2026. The archive describes manual
transcription and treats the data as a teaching snapshot.

Changes in this tour: derived numeric plotting tables, explicit ECDF vertices,
linear-interpolated quartiles, Gaussian KDE outlines, plotting coordinates and
count-scaled marker diameters. No person-level row is removed as a duplicate.
Unknown ages are excluded only from age-based graphics. Crew remains separate
from passenger classes. These are descriptive comparisons of the supplied cohort.
The tour's CC0 notice does not replace the dataset's declared terms.