Question: 1.2 Impute null values if present, also check for the values which are equal to zero. Do they have any meaning or do we need

1.2 Impute null values if present, also check for the values which are equal to zero. Do they have any meaning or do we need to change them or drop them? Check for the possibility of combining the sub levels of a ordinal variables and take actions accordingly. Explain why you are combining these sub levels with appropriate reasoning

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