{
"test_name": "Rainbow Test (Python - statsmodels)",
"dataset": "mtcars",
"formula": "mpg ~ cyl + disp + hp + drat + wt + qsec + vs + am + gear + carb",
"statistic": 3.857711147953167,
"p_value": 0.07119712038953607,
"passed": true,
"fraction": 0.5,
"description": "Tests for linearity by comparing fit on central subset vs full data. Uses statsmodels.stats.diagnostic.linear_rainbow."
}