Data Analysis Journal | Olga Berezovsky | Substack

What are user segmentation techniques? How to locate your Power users? How to do user segmentation analysis in SQL?

Olga Berezovsky

New Top Community What is Data Analysis Journal?About

A never ending battle with data quality, unexpected drawbacks of data automation, and failed A/B testing.

Olga Berezovsky

Nov 24

What metrics are helpful for measuring and quantifying the impact of a product rollout or a new feature?

Olga Berezovsky

Nov 17

The methodology of a common case study for data and product analysts on user activity and engagement

Olga Berezovsky

Nov 10

What are the new patterns of development for modern analytics? How to adapt, and what to expect from data analysis in a few decades?

Olga Berezovsky

Nov 3

A recap of data analysis publications and news over the past month.

Olga Berezovsky

Oct 27

Suggestions, examples, and steps for creating a data analyst portfolio to highlight your work and skills

Olga Berezovsky

Oct 20

How to improve data storytelling: being clear, concise, and showing the story in one simple chart.

Olga Berezovsky

Oct 13

Data Analysis Journal

What is Data Analysis Journal?Archive Authors My Account

#nojs-banner { position: fixed; bottom: 0; left: 0; padding: 16px 16px 16px 32px; width: 100%; box-sizing: border-box; background: red; color: white; font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol"; font-size: 13px; line-height: 13px; } #nojs-banner a { color: inherit; text-decoration: underline; } This site requires JavaScript to run correctly. Please turn on JavaScript or unblock scripts