{
"test_name": "Rainbow Test (Python - statsmodels)",
"dataset": "longley",
"formula": "GNP.deflator ~ GNP + Unemployed + Armed Forces + Population + Year + Employed",
"statistic": 1.2525163187166493,
"p_value": 0.6023432303042977,
"passed": true,
"fraction": 0.5,
"description": "Tests for linearity by comparing fit on central subset vs full data. Uses statsmodels.stats.diagnostic.linear_rainbow."
}