{
"test_name": "Rainbow Test (Python - statsmodels)",
"dataset": "bodyfat",
"formula": "Density ~ BodyFat + Age + Weight + Height + Neck + Chest + Abdomen + Hip + Thigh + Knee + Ankle + Biceps + Forearm + Wrist",
"statistic": 0.3404533789444923,
"p_value": 0.9999999961268581,
"passed": true,
"fraction": 0.5,
"description": "Tests for linearity by comparing fit on central subset vs full data. Uses statsmodels.stats.diagnostic.linear_rainbow."
}