Tag: Tutorial

NLP project: How to Clean and Prepare Your Data for Analysis

This is the second in a series of posts describing my natural language processing (NLP) project. To really benefit from this NLP article, you should read the first post, understand how to use pandas to work with text data, and be aware of list comprehensions and lambda functions. We’re also going to write a few […]

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How to Make Your Plots Appealing in Python

Data visualization is arguably the most important step in a data science project because it’s how you communicate your findings to the audience. You may do this for multiple reasons: to convince investors to finance your project, to highlight the importance of changes at your company, or just to present the results in the annual […]

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A Complete Guide to Python Virtual Environments

In this tutorial, we’ll learn about Python virtual environments, the benefits of using virtual environments, and how to work inside virtual environments. After you finish this tutorial, you’ll understand the following: What Python virtual environments are The benefits of working in virtual environments How to create, activate, deactivate, and delete virtual environments How to install […]

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Tutorial: How to Write a For Loop in Python

Most tasks we encounter in our everyday lives are repetitive. While these tasks may become boring to humans, computers can handle repetitive tasks quickly and efficiently. We’ll learn how in this tutorial. This tutorial is for Python beginners, but if you’ve never written a line of code before, you may want to complete our free-to-start […]

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Tutorial: Installing Python on Windows

Python is a popular open-source, high-level programming language. It’s intuitive, and it offers many helpful tools and libraries — Python is a powerful data science asset to have in your toolkit. To start working with Python, we first need to download it and install it on our operating system (in this case, Windows). How to […]

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Tutorial: Installing Python on Mac

Python is one of the most powerful programming languages, mostly used in data science, machine learning, and big data analytics. So, installing Python is essential for all programmers. As a novice programmer, you may be wondering how to install or update Python on your Mac properly. Here, we will walk through the different ways of […]

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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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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 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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SQL Tutorial: Selecting Ungrouped Columns Without Aggregate Functions

When is a SQL query that returns the correct answer actually wrong? In this tutorial, we’re going to take a close look at a very common mistake. It’s one that will actually return the right answer, but it’s still a mistake that’s important to avoid. That probably sounds rather mysterious, so let’s dive right in. […]

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Data Visualization in R with ggplot2: A Beginner Tutorial

A famous general is thought to have said, “A good sketch is better than a long speech.” That advice may have come from the battlefield, but it’s applicable in lots of other areas — including data science. “Sketching” out our data by visualizing it using ggplot2 in R is more impactful than simply describing the […]

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Tutorial: Web Scraping with Python Using Beautiful Soup

Web scraping allows us to extract information from web pages. In this tutorial, you’ll learn how to perform web scraping with Python and BeautifulSoup.

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How to Use If-Else Statements and Loops in R

Learn to use if-else statements, for loops, and while loops to build complex conditional programs in R, a valuable skill for aspiring data scientists and R programmers alike.

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