Question: 1) What is an unbalanced dataset? What does it mean that a dataset is unbalanced? What techniques are used to fix an unbalanced dataset? Provide

1) What is an unbalanced dataset? What does it mean that a dataset is "unbalanced"? What techniques are used to fix an unbalanced dataset? Provide a concise and meaningful answer.

2) What is feature engineering? What is it all about? Provide a concise and meaningful answer.

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