Analyze · Week 02

DANL thinking + tools

Continue Lecture 2 with a football decision tree, connect business intelligence to responsible dashboard use, then set up a reproducible workspace with Posit Cloud, R packages, and organized files.

Aug 31–Sep 4Decision trees, dashboards, and R tools
ImportantWeek 2 lecture range

Begin Lecture 2 at slide 13: 🌳 A decision tree follows game conditions. In Lecture 3, stop after slide 14: 🗂️ Workflow: Naming and File Management.

Focus

  • Decision-tree branches and conditional patterns
  • Business intelligence, KPIs, and dashboard evidence
  • Posit Cloud, R packages, and the install → load → use workflow

Prepare

  • Open Lecture 2 at slide 13
  • Open the NYC311 dashboard
  • Open your section’s R repository in Posit Cloud

Practice

  • Trace and interpret a decision-tree branch
  • Use dashboard evidence to support a tentative decision
  • Navigate Posit Cloud and follow the install → load → use workflow

Learning targets

  • Trace a path through a decision tree and interpret its conditional pattern.
  • Explain why a strong observed pattern is not a certain prediction.
  • Connect business intelligence and KPIs to recurring organizational decisions.
  • Interpret a dashboard pattern while stating an important limitation.
  • Identify the Script, Console, Environment, and Plots panes in Posit Cloud.
  • Explain what R packages and the tidyverse provide.
  • Distinguish installing a package from loading and using it.
  • Use a clear script filename and save work in an organized project.

Tool workflow

install.packages("tidyverse") # once
library(tidyverse)            # each new R session

Install a package once, then load it whenever a new R session needs its functions.

Lecture slides

TipLecture slide shortcuts

Click inside the slide preview, then use:

  • the visible ←/→ controls to page through the slides;
  • your mouse wheel or trackpad to keep scrolling the weekly page;
  • M to open the menu;
  • F to enter fullscreen;
  • E to enter or exit PDF export mode;
  • Ctrl + Shift + F to search within the slides;
  • Esc to exit the menu or fullscreen; and
  • T to switch between dark and light mode.
Lecture 2 · Continue at Slide 13: Decision TreeView slides in new tab
Lecture 3 · Posit Cloud and R Packages (through Slide 14)View slides in new tab

This week’s materials

Lecture 2 · Continue at Slide 13: Decision TreeClasswork 1 · NYC311 DashboardLecture 3 · Posit Cloud and R Packages through Slide 14
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