date calculation

#WOW2025 | Week 11 | Can you find Sales per Customer by First Purchase Cohort?

Introduction Cohort analysis is always fun to try and figure out how to show enough information without dumping every cohort onto a chart. This challenge looks at cohorts of when a first purchase was made (Superstore data), and subsequent sales to those customers. Are there certain cohorts that continually spend more money? Do certain cohorts […]

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#WOW2024 | Week 10 | Can you visualize when it gets busy?

Introduction Hello there! I’m Yoshi and I joined the WOW Tableau coach team this year.I’ve been participating in the WOW challenges since 2020, so I am really honored to be one of the coaches. Here’s my first challenge for you: let’s practice datetime calculations and data densifications. This week, we deal with dummy data regarding

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