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 repositories (repos)

Repos are a version control system in a centralized storage location, holding all the files, directories, and version history of a project. A repository allows multiple developers to collaborate on a project, keeping track of changes made to the project’s files over time, which is useful for projects with multiple data scientists and developers. It stores all the different versions of the files, along with metadata such as the author, timestamp, and description of each change.

There are many version control options that organizations might use. Some popular options include GitHub, BitBucket, GitLab, Azure DevOps repositories, and AWS CodeCommit.

It’s important to note that there are multiple phases of version control. The major three are repos, a working directory, and a staging area. We’ve already explained what a repo is, but what are the other two?

A working directory is the directory on your local machine where you...