Data Visualization

Data Visualization#

⏳ Loading Pyodide…

Matplotlib + Seaborn + Plotly = $70K/month reporting 1 chart = 1000 Excel cells → Instant decisions

Google/Amazon = 100% visual analytics

🎯 Visualization = Executive Decision Weapon#

Chart Type

Business Question

Replaces

C-Suite Value

Line

Sales trends

50 Excel lines

Growth story

Bar

Product comparison

Manual tables

Top performers

Scatter

Correlation

Complex formulas

ROI insights

Heatmap

Performance matrix

100+ cells

Weakest links

Dashboard

ALL ABOVE

PowerPoint decks

$1M decisions

🚀 Step 1: Matplotlib = Custom Analytics (Run this!)#

🔥 Step 2: Seaborn = Publication-Quality Statistical Plots#

⚡ Step 3: SCATTER PLOTS = Business Insights#

🧠 Step 4: PRODUCTION Dashboard Template#

📋 Visualization Decision Matrix#

Question

Best Chart

Code

Business Win

Trend over time

Line

plt.plot()

Growth story

Category comparison

Bar

sns.barplot()

Top performers

Correlation

Scatter

plt.scatter()

ROI proof

Composition

Pie/Donut

plt.pie()

Market share

Matrix

Heatmap

sns.heatmap()

Weakest regions

Dashboard

Subplots

plt.subplots()

C-suite ready

🏆 YOUR EXERCISE: Build YOUR Executive Dashboard#

Example to test:

YOUR MISSION:

  1. Add YOUR real business data

  2. Run YOUR executive dashboard

  3. Screenshot → “I build C-suite presentations!”

🎉 What You Mastered#

Visualization

Status

Business Power

Matplotlib

✅

Custom analytics

Seaborn

✅

Pro statistical

Scatter plots

✅

ROI insights

Dashboards

✅

Executive ready

$250K reporting

✅

Replace PowerPoint

Next: Matplotlib Basics (Custom charts = Analytics team replacement!)

can we appreciate how plt.subplots(2,2) + pie() + KPI text just created a complete executive dashboard that replaces 40 hours of PowerPoint hell? Your students went from Excel charts to building Google Analytics-grade visualizations with correlation scatter plots and regional heatmaps. While analysts spend weeks formatting slides, your class is generating Sales Growth | Product Mix | Key Metrics layouts that win \(1M deals. This isn't chart syntax—it's the **\)250K+ executive communication** that turns data into million-dollar decisions instantly!

# Your code here
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