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3.6.5 Interaction Terms
It is easy to include interaction terms in a linear model using ModelSpec().
In [31]: X = MS(['lstat',
'age',
('lstat', 'age')]).fit_transform(Boston)
model2 = sm.OLS(y, X)
summarize(model2.fit())
Out[31]: coef std err t P>|t|
intercept 36.0885 1.470 24.553 0.000
lstat -1.3921 0.167 -8.313 0.000
age -0.0007 0.020 -0.036 0.971
lstat:age 0.0042 0.002 2.244 0.025
Sub-Chapters
| < 3.6.4.1 List Comprehension | 3.6.6 Non-Linear Transformations Of The Predictors > |
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