Machine Learning Random Forest with Python from Scratch - Outliers Removal

The video tutorial covers the concept of outliers in data, explaining what they are and how they can occur due to errors. It discusses the challenges of manually detecting outliers in large datasets and introduces data visualization as a tool to identify them. The tutorial then demonstrates how to remove outliers from a dataset using a threshold method and concludes with saving the cleaned data. The final step of data cleaning, converting categorical data to numeric, is mentioned as a topic for the next lecture.

How did the speaker manually add outliers to the dataset?

What was the outcome after removing the outliers from the dataset?

What is the final step mentioned in the data cleaning process?