Module 08 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. A step in your plan that names no output file is…
- A. fine if it is short
- B. not checkable, and cannot be handed over
- C. acceptable for inspection steps
- D. the same as a comment
2. Printing a count at each of the six stages matters because…
- A. it makes the script faster
- B. the counts are evidence a reader needs and cannot recover from the final table
- C. R requires it between stages
- D. it prevents errors
3. Numbers in Quarto prose should come from…
- A. typing the value after checking it
- B. an inline expression evaluated at render
- C. a screenshot of the table
- D. a comment in the code chunk
4. The conclusive test of reproducibility is…
- A. reading through the scripts
- B. a checklist of good practice
- C. deleting the outputs, restarting R, re-running and comparing
- D. checking the package versions
5. 'North's mean is 31.5 visits higher' is a claim this course supports; 'North is busier' is not, because…
- A. the arithmetic differs
- B. the second generalises beyond the rows in front of you
- C. the second needs a larger sample only
- D. the second requires a chart
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Answer Key and Explanations
Check these only after attempting every question.
1. B — not checkable, and cannot be handed over
A step with no output is an intention. It stays open until the deadline forces a decision.
2. B — the counts are evidence a reader needs and cannot recover from the final table
How many rows arrived, how many were dropped and why, how many each summary rests on — none of that survives into the result.
3. B — an inline expression evaluated at render
Re-render after a data revision and the sentences, tables and charts update together, because nothing was copied.
4. C — deleting the outputs, restarting R, re-running and comparing
Anything that does not come back was made by hand. Without restarting, objects still in memory make scripts appear to work.
5. B — the second generalises beyond the rows in front of you
The first describes twelve rows and is certainly true of them. The second is a claim about the world, and that is inference.
Practical Check
Apply this module to your own work: complete the module activity for *Mini-Project and Reproducible Report*, 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.