With specific focus on dealing with incorrect or unwanted observations, in this video, I will demonstrate how I use Python to analyse the data for South African 5-day test cricket players from 1991 to 2023. In doing so, you will learn to have a dataset with improved integrity and ultimate interpretation. By employing data cleaning and preprocessing methods, you will learn how to ensure the accuracy and reliability of the analysis results. This video is part of a masterclass series of 10 videos where I do the data preprocessing and exploratory data analysis (EDA) for South African test-playing cricketers – join me in getting to know the data better!