Week 6, Exploratory Data Analysis

Read the shape of a distribution before you summarize it, then turn one finding into a story a decision-maker can act on. There is no lab or homework this week. Project 1 is due Sunday, October 4, 11:59 PM MT. Sep 28 to Oct 4.

This week

• Lecture 6, Read the Distribution, Then Tell the Story
  The full lecture deck, with the Ask AI tutor built in. Section 002 meets Monday, September 28 and section 001 meets Wednesday, September 30. The second half follows one finding from a chart to a hypothesis to a memo, which is the same arc as your Project 1 deck.

Interactive practice

• Distributions Field Guide
  A reference for the shapes you will meet in accounting data: what each looks like, which summary to trust, and what to do about it. It ends with prompts for asking your own LLM to build a box plot or histogram tool for your Project 1 ratio.
• Ratio Group Studio
  Box plots of a Compustat ratio by sector. Write the finding first, then see one version of it.
• Distribution Explorer
  Drag a distribution's tail and watch the mean, the median and the shape statistics move.
• Analytical Prompt Library
  Five reusable prompt moves for driving an analysis with an LLM.
• Prompt Playground
  Practice those moves on a small table, plus prompts for planning and checking a whole assignment.