Chapter 3: Exercise 3 "Using Titanic dataset" Solution

'Survived' should be dropped before fitting the model, therefore adding:
`train_data = train_data.drop('Survived', axis=1)` or
`train_data.drop('Survived', axis=1, inplace=True)`
before Pipeline transformations.

This would be very helpful for newbies.

Open the Chapter 3 Titanic exercise notebook and read the training-data setup immediately before the Pipeline transformations. Verify that the target column is excluded before fitting, then run the notebook's relevant cells and confirm the model trains without using 'Survived' as an input feature.

Written by the indexing model from the issue text.