The Best Python Package for Data Visualization
Data visualization is extremely important in data science. Although you often hear about the importance of data manipulation (i.e., "80% of data science is data manipulation"), data visualization is just as important. I explained why in a recent blog post about why...
Why You Need to Master Data Visualization
One of the biggest questions from data science students is what to focus on. All of us have limited time and there is a lot to learn in data science. Many overzealous students throw caution to the wind, and immediately try to learn advanced topics like machine...
Numpy Square, Explained
In this tutorial, I'll show you how to use the Numpy square function, which is sometimes called np.square. The Numpy square function is fairly straight forward, but in the tutorial, we'll explain everything step by step. You'll learn about how the syntax works, and...
Numpy Absolute Value, Explained
In this tutorial, I'll explain how to use the Numpy absolute value function, which is also known as np.abs or np.absolute. Ultimately, you'll learn how to compute absolute values with Numpy. We'll start with a brief overview of the function, and then work with some...
Why You Need to be a Top Performer
If you're interested in data science and want to become a data professional, you're probably going to need to make a choice. I think that the industry is going to split – and in fact, it probably already has. This split that I'm referring to is the divide between the...
Why You Should Write Clean Code
A few weeks ago one of my students sent me an email. He's a student of our Numpy Mastery course, and he was playing around with some Numpy techniques that he had learned in the course. In his email, he sent me some sample code, along with a question. i am attaching a...
Your Job is to Create Value
As a data scientist or data professional, you might think that your primary job is to write code or analyze data. In some sense that's true, but those things are not the ultimate purpose of your work. Ultimately, your job is not to write code. Writing code is...
3 Secrets for Mastering Data Manipulation
Many people struggle with data manipulation. Have you ever started a data science project and gotten stuck? Have you gotten stuck while trying to manipulate, clean, or "wrangle" your data? I have. The fact is, if you don't know what you're doing, data manipulation can...