This course is offered under the program of the HKUST Summer Institute for Secondary School Students by the School of Science. This course provides fundamental concepts and techniques in the field of data science. Students in this course can take the first step in the world of data science by studying basic concepts in probability, statistics and programming. Some daily-life applications of statistics implemented with an open source package Python will also be discussed to expose students to practical issues of real-world data, e.g. in house pricing, in pricing exchange rates, in classification problems, etc.