chi_square_example_01_p04.py

# STEP 2: GET THE "OBSERVED" TABLE AND "EXPECTED" TABLE
"""
    Calculate the "observed" table:
    "Observed" table can be extracted from our CrossTab by exclude the row_totals and col_totals
    You can see row_totals is in the index of 4 (in column)
        and col_totals is in the index of 6 (in row).
        So [0:5, 0:3] means "we will take the rows from 0 index to 5 index
        and columns from 0 index to 3 index and assign to new CrossTab
        that named [observed]"
"""
observed = voter_tab.iloc[0:5, 0:3]
# You can check the data of observed table by calling it
observed