Aleksey Korshuk

"My GitHub repository quickly filled up with impressive projects, showcasing my hard work and all that I've learned."

Aleksey Korshuk

Machine Learning Engineer & Researcher

Project overview

In this project, you’ll take on the role of a data analyst exploring the global COVID-19 pandemic. You’ll work with a real-world dataset, applying your R programming skills and leveraging powerful libraries like dplyr to manipulate, filter and aggregate the data.

Through techniques like grouping and summarizing, you’ll identify which countries have the highest rates of positive COVID-19 tests relative to their testing. In the process, you’ll strengthen your R coding and analytical thinking skills, building capabilities that are highly valued in data science roles.

Objective: Analyze a real COVID-19 dataset using R data wrangling techniques to uncover insights about testing and positive rates across countries, developing in-demand data analysis skills for your career.

Key skill required

To complete this project, it's recommended to build these foundational skills in R

  • Creating and working with vectors, matrices, and lists in R
  • Indexing data structures to extract elements for analysis
  • Applying functions to data structures to perform calculations
  • Manipulating and analyzing data using dataframes

Projects steps

Step 1: Guided Project Introduction

Step 2: Understanding the Data

Step 3: Isolating the Rows We Need

Step 4: Isolating the Columns We Need

Step 5: Extracting the Top Ten Countries with Most Covid-19 Cases

Step 6: Identifying the Highest Positive Against Tested Cases

Step 7: Keeping relevant information

Step 8: Putting all together

Step 9: Next steps

Master skills faster with Dataquest

Go from zero to job-ready

Go from zero to job-ready

Learn exactly what you need to achieve your goal. Don’t waste time on unrelated lessons.

Build your project portfolio

Build your project portfolio

Build confidence with our in-depth projects, and show off your data skills.

Challenge yourself with exercises

Challenge yourself with exercises

Work with real data from day one with interactive lessons and hands-on exercises.

Showcase your path certification

Showcase your path certification

Share the evidence of your hard work with your network and potential employers.

The Dataquest guarantee

Guarantee

Dataquest has helped thousands of people start new careers in data. If you put in the work and follow our path, you’ll master data skills and grow your career.

Money

We believe so strongly in our paths that we offer a full satisfaction guarantee. If you complete a career path on Dataquest and aren’t satisfied with your outcome, we’ll give you a refund.

Recommended projects

Free

Investigating Fandango Movie Ratings

Practice using R to analyze movie ratings data, compare 2015 vs 2016 ratings, and apply sampling and distributions to investigate bias.

R Intermediate 8 steps
Free

NYC Schools Perceptions

Practice data cleaning, analysis, and visualization in R to explore survey data and showcase your skills with R Notebooks.

Beginner 3 steps
Free

Investigating Fandango Movie Ratings

Practice statistical analysis in Python to investigate movie rating bias and determine if Fandango inflated ratings.

Python Intermediate 8 steps
Free

Building Fast Queries on a CSV

Practice implementing an inventory system for a laptop store using Python classes, dictionaries, and binary search.

Python Intermediate 10 steps
Free

Garden Simulator Text Based Game

Practice using OOP, error handling, and randomness in Python to create an interactive gardening game simulator.

Python Beginner 11 steps
Free

Predicting Heart Disease

Practice building a K Nearest Neighbors classifier in Python to predict heart disease risk from patient data.

Python Intermediate 10 steps
Free

Word Raider

Practice using Python variables, lists, loops, conditionals, and file handling to build an interactive word-guessing game.

Python Beginner 11 steps
Free

Predicting Condominium Sale Prices

Practice using linear regression in R to predict condominium sale prices based on size and location in New York City.

R Intermediate 8 steps
Free

Kaggle Data Science Survey

Practice analyzing survey data in Python to uncover insights about data science careers and skills.

Python Beginner 8 steps

Grow your career with
Dataquest.

98%
of learners recommend
Dataquest for career advancement
4.85
Dataquest rating
SwitchUp Best Bootcamps
$30k
Average salary boost
for learners who complete a path
Aaron

Aaron Melton

Business Analyst at Aditi Consulting

“Dataquest starts at the most basic level, so a beginner can understand the concepts. I tried learning to code before, using Codecademy and Coursera. I struggled because I had no background in coding, and I was spending a lot of time Googling. Dataquest helped me actually learn.”

Jessi

Jessica Ko

Machine Learning Engineer at Twitter

“I liked the interactive environment on Dataquest. The material was clear and well organized. I spent more time practicing then watching videos and it made me want to keep learning.”

Victoria

Victoria E. Guzik

Associate Data Scientist at Callisto Media

“I really love learning on Dataquest. I looked into a couple of other options and I found that they were much too handhold-y and fill in the blank relative to Dataquest’s method. The projects on Dataquest were key to getting my job. I doubled my income!”

Join 1M+ data learners on
Dataquest.

1

Create a free account

2

Choose a learning path

3

Complete exercises and projects

4

Advance your career

Start learning today