Recall
Set 1: Quick Check
Match observations, variables, identifiers, measures, dimensions, units, and row grain.
Data Structure, Variables, Types, and Grain
Identify observations, variables, types, identifiers, and the row grain that controls every calculation.
Start Chapter PracticeChapter plan
What you will be able to do
- Classify fields and state the grain of detail and summary data.
- Study time
- 24–29 minutes, self-paced
- Course
- Data Analysis for Business (Beginner)
- Practice order
- Four sets, completed in sequence
Chapter practice
Practice in chapter order
10 activities · 80% mastery target
Start set 1
Guided application
Set 2: Core Practice
Classify fields, verify keys, and calculate a weighted result from summary data.
Hands-on
Set 3: Workplace Task
Choose the right source grain and validate an order-level workplace extract.
Independent check
Set 4: Mastery Check
Diagnose double counting, overlapping grain, and average-of-averages errors.