Module 02 Knowledge Check
5 questions. Pass mark 4 out of 5. Answer every question before checking the answer key below, then retry after reading the feedback.
1. Without a decision behind it, a chart…
- A. is still useful
- B. cannot be wrong, and therefore cannot be right
- C. should use defaults
- D. is exploratory by definition
2. A flat total across a period can hide…
- A. nothing
- B. two groups moving in opposite directions
- C. only measurement error
- D. seasonal effects only
3. 'Did the promotion work?' implies comparing…
- A. promoted-before against promoted-after
- B. promoted against comparable unpromoted over the same period
- C. this year against last year
- D. the promotion cost against revenue
4. The same finding shown to an executive committee and to an analyst…
- A. should use the same chart
- B. usually needs different chart types
- C. differs only in commentary
- D. differs only in colour
5. The chart brief should be written…
- A. after exploring the data
- B. before opening a tool
- C. after the first draft
- D. by the requester alone
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Answer Key and Explanations
Check these only after attempting every question.
1. B - cannot be wrong, and therefore cannot be right
The decision names the comparison, which is what makes a chart checkable.
2. B - two groups moving in opposite directions
Check the total against the breakdown before charting either.
3. B - promoted against comparable unpromoted over the same period
Before-and-after captures every other change in the period as well.
4. B - usually needs different chart types
A box plot will be misread by one audience and a single number withholds what the other needed.
5. B - before opening a tool
Written afterwards it justifies whatever you happened to build.
Practical Check
Apply this module to your own work: complete the module activity for *Data Questions, Audience and Decision Context*, then write one sentence naming what your result shows and one naming what it does not.
Strong Answer Pattern
A strong answer names the task, the evidence used, the check performed, and the remaining limitation. It avoids "proved", "guaranteed", or "always" unless the evidence genuinely supports it.