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Category: Data Science Tutorials

Tutorial: Demystifying Functions in Python

Progressing through the data science journey means encountering and dealing with increasingly complex tasks. In order to do this, you’ll need something that will “take in” data, process it in some manner, and then return some output. We can accomplish this multi-phasic process by using functions. What are functions? In the event that you would […]

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Building a Recommender System with Netflix Data in R

Ok, so I finally got a chance to finish this three-part series. It’s been a long one, but better late than never. Since it’s been a while, I figured a quick recap is in order. To show how to approach an unguided data project, I decided to use some Netflix data to demonstrate the process […]

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NLP Project Part 1: Scraping the Web to Gather Data

This is the first in a series of posts describing my natural language processing (NLP) project. To really benefit from this NLP article, you should understand the pandas library and know regex for cleaning data. We’ll also focus on web scraping, so elementary knowledge of HTML (the language used for creating websites) is very helpful, […]

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How I Scraped Over 25,000 Forum Posts In 3 Steps

Motivation The Dataquest Community is evolving. In the past months, I’ve been watching the growth of active users, new topics, and areas of discussion. Over the past six months, the platform has made a great contribution to the development of various tags to facilitate the filtering and search for relevant information. But let’s try to […]

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How to Plot a Bar Graph in Matplotlib: The Easy Way

A bar graph or bar chart is one of the most common visualization types and is very easy to create in Matplotlib. All we need to do is write one short line of Python code. However, if we want to create an informative, easily readable bar plot that efficiently reveals the story behind the data, […]

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Comical Data Visualization in Python Using Matplotlib

How to make comical visualizations in Matplotlib? Explained using a Netflix Movie and TV Show dataset. Data visualization is a great way to tell a story. You can easily absorb information and identify patterns in data. One of our students decided to create a data visualization in Python using Matplotlib to understand the different types […]

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Tutorial: Web Scraping with Python Using Beautiful Soup

Learn how to scrape the web with Python! The internet is an absolutely massive source of data — data that we can access using web scraping and Python! In fact, web scraping is often the only way we can access data. There is a lot of information out there that isn’t available in convenient CSV […]

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SQL Commands: The Complete List (w/ Examples)

What can you do with SQL? Here’s a reference guide to the most commonly-used SQL commands, with code examples.

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SQL Basics — Hands-On Beginner SQL Tutorial Analyzing Bike-Sharing

Learn the SQL basics and go hands-on querying databases as you analyze bike rental data in this free beginner SQL tutorial.

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SQL Joins Tutorial: Working with Databases

Learn how to master joins in the SQL joins tutorial. Learn to use inner, left, right, and outer joins while analyzing CIA factbook data.

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