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Age Group Survival Analysis
Group Titanic passengers into age bands: 'Child' (age < 13), 'Teen' (13–17), 'Adult' (18–59), 'Senior' (60+), 'Unknown' (NULL age). For each group show: age_group, passengers, survival_rate (%, 1 dec). Sort by survival_rate descending.
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Schema
passengers
| passenger_id | survived | pclass | name | sex | age | sibsp | parch | fare | embarked |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 0 | 3 | Braund, Mr. Owen Harris | male | 22 | 1 | 0 | 7.25 | S |
| 2 | 1 | 1 | Cumings, Mrs. John Bradley | female | 38 | 1 | 0 | 71.28 | C |
| 3 | 1 | 3 | Heikkinen, Miss. Laina | female | 26 | 0 | 0 | 7.93 | S |
Expected output: 5 age groups with survival rates
Hint
Concepts
SELECT CASE GROUP BY Aggregation CASE + GROUP BY
Practise the topic: SQL practice questions · CASE WHEN practice · GROUP BY exercises
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