Course overview
In this course, you’ll learn several techniques for sampling data, such as random sampling and cluster sampling. You’ll also learn about discrete variables and random variables in the context of frequency distributions, and the different types of charts and graphs you might use to visualize frequency distributions.
As you learn about these concepts and how to use them for more robust data analysis, you’ll be working with a dataset about basketball players in the WNBA (Women’s National Basketball Association) that contains general information about players, along with their metrics for the 2016-2017 season.
Best of all, you’ll learn by doing — you’ll practice and get feedback directly in the browser. At the end of the course, you’ll complete a portfolio project that asks you to investigate Fandango Movie Ratings to determine if Fandango is inflating movie ratings on its site. This is an opportunity to learn to identify and overcome common setbacks in practical data analysis.
Key skills
- Sampling data using simple, random sampling, stratified sampling, and cluster sampling
- Employing and measuring variables in statistics
- Building, visualizing, and comparing frequency distribution tables
Course outline
Summarizing Data in SQL [4 lessons]
Summary Statistics with SQL 1h
Lesson Objectives- Combine aggregate functions with the WHERE clause
- Combine aggregate and scalar functions
- Combine aggregate functions and arithmetic operators
Group Summary Statistics with SQL 1h
Lesson Objectives- Define the GROUP BY clause
- Apply the GROUP BY clause
- Employ the GROUP BY clause with aggregate functions
Multiple Group Summary Statistics 1h
Lesson Objectives- Group database rows based on several criteria
- Filter aggregate rows
The Dataquest 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.
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.
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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 confidence with our in-depth projects, and show off your data skills.
Challenge yourself with exercises
Work with real data from day one with interactive lessons and hands-on exercises.
Showcase your path certification
Impress employers by completing a capstone project and certifying it with an expert review.
Learning resources
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