Tessorio Library · Premium
Data Analytics with Excel and SQL: From Raw Data to Answers
Unit 1
The Analyst's Job and the Six Steps
A Week in the Life of an Entry-Level Analyst (and the Three Portfolio Pieces That Get You Hired)
Ask, Prepare, Process, Analyze, Share, Act: Sorting Coffee Shop Tasks Into the Six Steps
Turning "Sales Feel Down Lately" Into One Answerable Question
Unit 2
Getting the Coffee Shop Data Clean
Reading a Raw Sales Export: Grain and Red Flags
Fixing Duplicates, Stray Text, Dates and Dollar Signs
The Six Blank Quantities: Deciding and Logging Your Choices
Unit 3
Spreadsheet Answers: Formulas, Lookups and Pivot Tables
Adding Up Only the Lattes: SUM, AVERAGE, COUNTIF and SUMIF
IF Labels and the $ That Locks a Cell
Pulling in Each Item's Category with VLOOKUP
Building a Pivot Table That Answers "Which Hour Is Busiest?"
Unit 4
Asking the Database: SELECT to JOIN
Tables, Rows and Columns: Your First SELECT and WHERE
Biggest First, Top 20 Only: ORDER BY and LIMIT
One Row Per Item: GROUP BY, COUNT, SUM, AVG and HAVING
Matching Two Tables: INNER JOIN, LEFT JOIN and Counting the Rows
Unit 5
Numbers That Tell the Truth
Five Numbers That Describe a Week of Coffee Sales
Why That $9.80 Average Slide Isn't Safe
Unit 6
Charts and a Dashboard That Answer the Question
Line, Bar, Stacked or Scatter: Matching the Chart to the Coffee Shop Question
One Screen for 'Should I Add a Second Barista?'
Unit 7
Case Study: One Question, Start to Finish
Chasing One Question: "Why Are Our Afternoons Quiet?"
The 200-Word Finding: Evidence, Limits and a 30-Day Measure