At the following link you can find a Notebook in which i used the Scikit-learn library to preprocess the Titanic dataset (attached) and predict survival. I used KNN and SVM models to perform the predictions comparing the accuracy before and after scaling the dataset.
Results show that for both models used (KNN and SVM) there is an increase in accuracy when the prediction is performed on a preprocessed (scaled) dataset
Notebook: https://colab.research.google.com/drive/1pRAJCCkcdopNm0hwC-eNaErxzW1K9XzF?usp=sharing