A Tour of Data Science: Learn R and Python in Parallel covers the fundamentals of data science Programming Quantitative analysts R and Python Statistics and machine learning in a single and short book. It does not cover everything and machine learning in a single short book. It does not cover everything and others who want to learn programming with R and Python from a data science perspective. This book covers the fundamentals of data science and the popular data manipulation tools data.table and pandas Provides a concise and accessible presentation Includes machine learning algorithms implemented from scratch but instead but rather etc. Appealing to data scientists gradient boosting trees in one source. in one source. Key features: Allows you to learn R and Python in parallel Cover statistics including programming lasso linear regression logistic regression optimization optimization and predictive modelling programming; machine learning; statistics; predictive modeling ridge statisticians teaches the key concepts and topics in Data Science. It also covers two of the most popular programming languages used in Data Science teaches the key concepts and topics. It also covers two of the most popular programming languages used in Data Science