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Omitted Variable Bias: Wald Test in Python Videos

Last Update: March 22, 2022

My online video tutorials are hosted at YouTube channel.

For learning this concept, you can view my online video tutorials: Omitted Variable Bias: Wald Test in Python (Spyder) and Omitted Variable Bias: Wald Test in Python (Jupyter).

Videos Code

1. Package

import statsmodels.api as sm
import statsmodels.formula.api as smf

2. Data

houseprices_object = sm.datasets.get_rdataset(dataname="HousePrices",
                                              package="AER", cache=True)
houseprices = houseprices_object.data
print(houseprices.iloc[:, 0:4].head())
print(houseprices_object.__doc__)

3. Model

mlr = smf.ols(formula="price ~ lotsize + bedrooms + bathrooms",
              data=houseprices).fit()

4. Omitted Variable

waldtest = mlr.wald_test(r_matrix="bathrooms = 0", use_f=True)
print(waldtest)

Courses

My online courses are hosted at Teachable website.

For more details on this concept, you can view my Linear Regression in Python Course.

My online courses are closed for enrollment.
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