12. Redo the zip code transformation.

May 21, 2025, 3:56 PM

chapter_study_2.xlsx

Missing file

Load the dataset.

The zip column contains zip codes, which must be 5-digit integers. Identify all the rows in zip that have 4-digit integers and add a leading 0 to the value so that it is a 5-digit integer.
save the dataset as a new excel file called chapter_study_3.
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