Graded Quiz: Data Wrangling Quiz :Applied Data Science Capstone (Applied Data Science Specialization) Answers 2025
1. Question 1
How many launches came from CCAFS SLC 40?
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✅ 55
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❌ 40
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❌ 32
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❌ 67
Explanation: In the filtered SpaceX launch dataset, the launch site CCAFS SLC-40 appears 55 times, making it one of the most used sites.
2. Question 2
What was the success rate?
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✅ 80%
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❌ 40%
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❌ 67%
Explanation: After counting successful landings vs total attempts in the lab dataset, the calculated success rate is 80%.
3. Question 3
How many launches went to geosynchronous orbit?
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✅ 13
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❌ 7
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❌ 22
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❌ 3
Explanation: In the Orbit column of the dataset, 13 launches were marked as GTO (Geosynchronous Transfer Orbit).
4. Question 4
How many mission outcome was successfully landed to a drone ship?
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✅ 10
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❌ 4
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❌ 2
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❌ 15
Explanation: The mission outcome field (landing_success == True and landing_type == "ASDS") shows 10 successful drone-ship landings.
🧾 Summary Table
| Q# | Correct Answer | Key Concept |
|---|---|---|
| 1 | 55 | Count launches from LaunchSite == "CCAFS SLC 40" |
| 2 | 80% | Success rate = successful landings / total |
| 3 | 13 | Count Orbit == "GTO" |
| 4 | 10 | Successful ASDS (drone ship) landings |