```json { "scores": [ { "id": "cnv_8fb99a520dc24a4b", "score": 75, "tier": "regular", "rationale": "Clear dataset overview and row definition. Foundational but expected for first-time viewers." }, { "id": "cnv_6ecb259baf084d65", "score": 72, "tier": "regular", "rationale": "Useful column taxonomy. Systematic but standard orientation work, not actionable insight." }, { "id": "cnv_841d94e18f464571", "score": 65, "tier": "regular", "rationale": "Sample rows shown with evidence. Helpful for understanding structure but low analytical depth." }, { "id": "cnv_62624731a1684aa0", "score": 70, "tier": "regular", "rationale": "Complete column reference with types and meanings. Essential reference but boilerplate." }, { "id": "cnv_4f49c78d473f4371", "score": 82, "tier": "great", "rationale": "Specific missing-value percentages (19.9% Age, 77.1% Cabin, 0.2% Embarked). Actionable for imputation decisions." }, { "id": "cnv_a01bf60541614bac", "score": 68, "tier": "regular", "rationale": "Confirms 891 rows, 16 columns, no time dimension. Factual but expected metadata." }, { "id": "cnv_0377479eb0284b5c", "score": 60, "tier": "not_useful", "rationale": "Confirms no duplicates. Correct but low-signal; expected in clean datasets." }, { "id": "cnv_9f8848e0a7324508", "score": 78, "tier": "regular", "rationale": "Detailed distributions (Age 0.42–80, Fare £0–£512.33, right-skewed). Concrete but standard EDA." }, { "id": "cnv_a984c64fef69474b", "score": 70, "tier": "regular", "rationale": "Cardinality counts (Cabin 147, Ticket 681). Useful for modeling but expected analysis." }, { "id": "cnv_2525679bf2474095", "score": 85, "tier": "great", "rationale": "Identifies 15 zero-fare anomalies, 77% cabin missingness, age gaps. Concrete quality issues with evidence." }, { "id": "cnv_d3315b528b95444f", "score": 80, "tier": "great", "rationale": "Specific correlations (Parch–SibSp 0.415, Fare–Survived 0.257). Actionable for feature engineering." }, { "id": "cnv_bb4fde09c5644d2a", "score": 75, "tier": "regular", "rationale": "Frequency distributions (Southampton 72%, Cherbourg 19%). Clear but expected categorical summary." }, { "id": "cnv_11aabbd2fa394edb", "score": 88, "tier": "great", "rationale": "Identifies Fare as key metric, shows top/bottom records with names and outcomes. Concrete, actionable." }, { "id": "cnv_f9285e62e95244a9", "score": 86, "tier": "great", "rationale": "Multiple segmentation strategies (class, gender, family size) with survival rates. Actionable for analysis." }, { "id": "cnv_f74f7abcf456472d", "score": 84, "tier": "great", "rationale": "Survival by class with specific rates (63% 1st, 47% 2nd, 24% 3rd). Directly answers key question." }, { "id": "cnv_9ccb7186aa1c4901", "score": 72, "tier": "regular", "rationale": "Geographic distribution across ports (Southampton 72%). Useful context but limited analytical depth." }, { "id": "cnv_3930f904e0c0478c", "score": 90, "tier": "great", "rationale": "Three compelling research questions with gender (74% vs 19%) and class disparities. Guides investigation." }, { "id": "cnv_fc87cc924742463c", "score": 92, "tier": "great", "rationale": "Counterintuitive finding: 3rd-class children (37.2%) survived less than 1st-class men (36.9%). Surprising, specific, actionable." } ] } ```