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Please normalize and unify the entries without removing any data. Add three new columns: Source\_code, Source, and Source\_group, to reflect the suggested standardization. Ensure that the final result includes at least 100 unique Source values and 25 meaningful Source\_group categories with appropriate mappings.
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Tech Lead

Interviewed at EY

3.7
May 15, 2025

Please normalize and unify the entries without removing any data. Add three new columns: Source\_code, Source, and Source\_group, to reflect the suggested standardization. Ensure that the final result includes at least 100 unique Source values and 25 meaningful Source\_group categories with appropriate mappings.

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