Book Image

Cracking the Data Science Interview

By : Leondra R. Gonzalez, Aaren Stubberfield
Book Image

Cracking the Data Science Interview

By: Leondra R. Gonzalez, Aaren Stubberfield

Overview of this book

The data science job market is saturated with professionals of all backgrounds, including academics, researchers, bootcampers, and Massive Open Online Course (MOOC) graduates. This poses a challenge for companies seeking the best person to fill their roles. At the heart of this selection process is the data science interview, a crucial juncture that determines the best fit for both the candidate and the company. Cracking the Data Science Interview provides expert guidance on approaching the interview process with full preparation and confidence. Starting with an introduction to the modern data science landscape, you’ll find tips on job hunting, resume writing, and creating a top-notch portfolio. You’ll then advance to topics such as Python, SQL databases, Git, and productivity with shell scripting and Bash. Building on this foundation, you'll delve into the fundamentals of statistics, laying the groundwork for pre-modeling concepts, machine learning, deep learning, and generative AI. The book concludes by offering insights into how best to prepare for the intensive data science interview. By the end of this interview guide, you’ll have gained the confidence, business acumen, and technical skills required to distinguish yourself within this competitive landscape and land your next data science job.
Table of Contents (21 chapters)
Free Chapter
1
Part 1: Breaking into the Data Science Field
4
Part 2: Manipulating and Managing Data
10
Part 3: Exploring Artificial Intelligence
16
Part 4: Getting the Job

Introducing populations and samples

Statistics is the art of extracting meaningful insights from data, and it all begins with a thorough understanding of populations and samples. In this section, we will explore the fundamental concepts that underpin statistical analysis by distinguishing between populations and samples.

Understanding these concepts is important because they form the basis for generalizing observations from a subset of data to a larger group. By investigating the intricacies of populations and samples, you will gain the necessary tools to make sound inferences and draw reliable conclusions from the data you encounter. So, let‘s embark on this enlightening journey and uncover the foundations of statistical analysis.

Defining populations and samples

In the realm of statistics, a population refers to the entire group of individuals, objects, or events that we are interested in studying. For instance, if we wanted to research the average height of all adults...