Amazon.com: A collection of Data Science Interview Questions Solved in Python and Spark: BigData and Machine Learning in Python and Spark (A Collection of Programming Interview Questions Book 6) eBook: Antonio Gulli: Kindle Store

A nice balance of breadth and depth of you are already familiar with data science. If you are a data scientist this will give a nice review of topics that helps you pin point what you need to brush up on or quick primers to get you pointed in the right direction to study things you havent used much. I would strongly caution against using this book to learn a concept a new. Statistical concepts are given less weight and some are described with suboptimal accuracy. The programming/data engineering stuff is good and concise but maybe too brief for less CS oriented data scientists.