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Olga BerezovskyinData Analysis JournalDay Of The Week Analysis in SQLHow to break down user activity by day of the week in SQL·4 min read·Jul 5, 2022----
Olga BerezovskyinData Analysis JournalFinancial Forecasting 101: Why, When, And HowHow and when to apply revenue forecasting for data analysis·6 min read·May 26, 2022----
Olga BerezovskyinData Analysis JournalUser Engagement and Activity Histogram AnalysisUser engagement and frequency of usage analysis using SQL·5 min read·Oct 27, 2021----
Olga BerezovskyinData Analysis Journal5 Mistakes To Avoid When Running A/B TestsCommon product test mistakes and a practical guide for successful A/B tests·5 min read·Sep 10, 2021----
Olga BerezovskyinData Analysis JournalHow To Create Date Series in SQLAdvanced SQL challenge on how to generate a time series in Postgres or RedShift.·3 min read·Sep 10, 2021----
Olga BerezovskyinData Analysis JournalCorrelation Analysis 101 in PythonHow to read and run correlation plots in Python Pandas·5 min read·Jul 24, 2021----
Olga BerezovskyinData Analysis JournalGenerating a Word Cloud In PythonLearn how to make a word cloud for text analysis·3 min read·Jul 23, 2021----
Olga BerezovskyinData Analysis JournalHow Improving User Engagement and Retention Drives RevenueCase study: how increasing user activity affects company revenue·4 min read·May 24, 2021----