~/talk

UX Techniques Supporting Varying Levels of Aggregation

on YouTube 42m
Talkat Data By the Bay 2016 · 2016-05-16..05-20· [data-visualization, react]

speaker

name:Katherine Ahern
links:none on file

resources

video:https://youtu.be/IwLF0hC6btw
slides:none on file

summary

Aggregation choice flips conclusions: the same dataset shows 48 of 50 states example where more states’ averages fall yet the population-weighted average rises, and hospital waits read 8 vs 30 minutes depending on per-hospital or per-patient aggregation. Practical tactics include SQL window functions (OVER, PARTITION), data prep for D3, quick Excel prototyping, and metadata windows for moving seasons. ClearStory Data combines Spark + D3 + React into a web app that blends sources, scales to large sets, and keeps exploration interactive.

AI-written summary · about

chapters (6)

  1. 0:00Start
  2. 5:59Affordances for Visualization Types
  3. 11:26Vertical Drilling
  4. 15:10Curated "Drilling" Requires Users to Identify Categories
  5. 17:45Window Operators
  6. 18:39Data By The Bay Script Examples

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