Data Analysis Journal
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An insightful look into skills, qualities, and values, favorite applications, and the future of structured databases
Olga Berezovsky
Jun 16CommentShare
Building complex and advanced SQL queries for data analysis, data manipulation, and modeling
Olga Berezovsky
Jun 9CommentShare
How to measure A/B test success, and why product experiments can be tricky and not always effective.
Olga Berezovsky
Jun 2CommentShare
A recap of data analysis publications, news, and tutorials over the past month.
Olga Berezovsky
May 26CommentShare
Some common Python interview questions for hiring data analysts and data scientists
Olga Berezovsky
May 19CommentShare
A close look at Customer Acquisition Cost, how to calculate it, and ways to improve CAC and user growth.
Olga Berezovsky
May 12CommentShare
Learn how to install a database and practice SQL on your own to nail take-home assignments and interview questions
Olga Berezovsky
May 5CommentShare
A recap of data analysis publications, guides, and news over the past month. 
Olga Berezovsky
Apr 28CommentShare
An insightful look into some of the biggest challenges for data analysts, and how to overcome them while building a data-driven culture
Olga Berezovsky
Apr 21Comment 2Share
How to break down user activity by day of the week in SQL
Olga Berezovsky
Apr 14Comment 4Share
How and when to apply revenue forecasting for data analysis
Olga Berezovsky
Apr 7CommentShare
A recap of data analysis publications, news, and tutorials over the past month.
Olga Berezovsky
Mar 24CommentShare
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