```json { "classifications": [ { "column": "Country", "role": "dimension", "confidence": 1.0, "reason": "Country name used for grouping and filtering; 155 distinct values matching row count suggests one per country" }, { "column": "Happiness.Rank", "role": "measure", "confidence": 0.9, "reason": "Ordinal ranking (1-155) representing position; typically displayed or used in comparisons rather than as identifier" }, { "column": "Happiness.Score", "role": "measure", "confidence": 1.0, "reason": "Numeric score (2.69-7.54) that would be aggregated (averaged) across groups" }, { "column": "Whisker.high", "role": "measure", "confidence": 1.0, "reason": "Upper confidence interval bound; numeric value for aggregation" }, { "column": "Whisker.low", "role": "measure", "confidence": 1.0, "reason": "Lower confidence interval bound; numeric value for aggregation" }, { "column": "Economy..GDP.per.Capita.", "role": "measure", "confidence": 1.0, "reason": "GDP per capita contribution score (0-1.87); numeric measure to be aggregated" }, { "column": "Family", "role": "measure", "confidence": 1.0, "reason": "Family support score (0-1.61); numeric measure for aggregation" }, { "column": "Health..Life.Expectancy.", "role": "measure", "confidence": 1.0, "reason": "Life expectancy contribution score (0-0.95); numeric measure for aggregation" }, { "column": "Freedom", "role": "measure", "confidence": 1.0, "reason": "Freedom score (0-0.66); numeric measure for aggregation" }, { "column": "Generosity", "role": "measure", "confidence": 1.0, "reason": "Generosity score (0-0.84); numeric measure for aggregation" }, { "column": "Trust..Government.Corruption.", "role": "measure", "confidence": 1.0, "reason": "Trust/corruption score (0-0.46); numeric measure for aggregation" }, { "column": "Dystopia.Residual", "role": "measure", "confidence": 1.0, "reason": "Residual score (0.38-3.12); numeric measure for aggregation" } ] } ```