Data is meaningless until its conversion into valuable information. Data Science involves mining large datasets containing structured and unstructured data and identifying hidden patterns to extract actionable insights.
Data science is one of the most popular emerging domains and most sought-after career options. Data Science is revolutionizing almost every industry and gaining popularity day by day. Data Science enables enterprises to measure,
track, and record performance metrics for facilitating enhanced decision-making. Data Science is widely used in various industry domains, including marketing, healthcare, fi nance, banking, policy work, and more. That explains why Data
Science is important.

Some of the many Data Science benefi ts include the following:

• In the healthcare industry, physicians use Data Science to analyze data from wearable trackers to ensure their patients’ well-being and make vital decisions.
• Retailers use Data Science to enhance customer experience and retention.
• Data Science is widely used in the banking and fi nance sectors for fraud detection and personalized fi nancial services.
• Transportation providers use Data Science to enhance the transportation journeys of their customers.
• Construction companies use Data Science for better decision-making by tracking activities.
• Data Science enables trapping and analyzing massive data from manufacturing processes.
• Data Science facilitates fi rms to leverage social media content to obtain real-time media content usage patterns. This enables the fi rms to create target audience-specifi c content, measure content performance, and recommend ondemand
content.
• Data Science helps study utility consumption in the energy and utility domain.

With its footprint in practically every industry, Data Science job demand is estimated to rise several-fold in the future.The importance of Data Science is growing with every coming day. The CBSE has introduced this subject for the students of classes 8 to 10 as a skill subject. I am pleased to present the Series on DATA SCIENCE for the students of classes 8 to 10 strictly in accordance with the latest syllabus and content prescribed by the CBSE.

Some of the features of the content of the present book of class 8 are:

• The first chapter takes small steps to explain the types of data that exist and further sub-categories of these data and the use of data in various ways in the real world. A qualitative or subjective view of various kinds of data is very well given.
• The second chapter of the book gives you an insight into the career options and utilization of Data science in actual life.
• The third and fourth chapters explain data analysis and data visualization which are part of data science life cycle.

The book presents the concepts in a very simple language with easy to understand examples adapted from day-to-day utilization of Data science technology.

Relevant fi gures and additional information have been provided in the form of Did you know. In the midst of the chapter, the students can assess themselves and challenge their understanding with the help of Check your knowledge
and fun-fi lled activities. Towards the end of every chapter, Multiple-choice-questions, Fill in the blanks, true/False and short and long answer questions are given. The exercise includes hots (higher order thinking skills) and applied Projects keeping in mind the practical value of the lessons learnt in data science.

One of the special feature of this book is topic-wise audio-video lectures through Qr codes by the subject experts.

I hope that this book will meet the needs and requirements of the students and teachers as laid down in the syllabus. Any suggestion for further improvement of the book will be most welcomed.