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itaewon's Issues

0 p-value for the F-statistic in Linear Regression

Code to recreate the issue:

import pandas as pd
import numpy as np
from itaewon.rmodels import RModels

data = pd.DataFrame()
error = np.random.normal(0,5,300)
data['X'] = np.random.normal(5,2.6,300)
data['Z'] = np.random.binomial(1,0.3,300)
data['Y'] = 10*data['X'] + 2*data['Z'] + error

formula = 'Y ~ X + Z'
rmodel = RModels(data,formula)
model = rmodel.linear_regression()
rmodel.infer_linear(model)

Obviously, issue only occurs if the F-statistic is statistically significant.

Possible case: The p-value is manually computed using pf

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