Introduction This week’s challenge may not be too difficult for some of you, but I created it in order to bring attention to an essential skill – calculating weighted averages. As data analysts, it’s our responsibility to ensure that the data we display is not misleading or innacurate. I didn’t spend too much time explaining […]
#WOW2026 | Week 14 | Can you calculate the correct metric? Read More »
Introduction Hey everyone! This week’s Workout Wednesday focuses on creating clear, actionable patient demographic visuals using a Sankey, a KPI, and two bar charts—binned and unbinned. Here’s the setup: the Sankey chart helps us map distribution, while the KPI delivers an at-a-glance view of a key metric to ground the analysis. With the bar charts,
2024 Week 45 | Sigma: Can you create these patient demographic visuals? Read More »
Introduction For this week’s challenge, we’re creating a dynamic column bar chart. The end user can select the number of columns to split the data into. Note that there are only 37 States in the Plugs data, so do your best not to hard code anything for a more realistic use case! Have fun!-Katrina Need
2024 Week 41 | Sigma: Can you create a dynamic column bar chart? Read More »
Introduction I may have gotten a little overexcited with this challenge by combining TWO problems that some of my colleagues came up against recently when trying to solve problems for their clients. That being said, this week’s challenge should be a good workout. Since the challenge applies some more advanced calculations, I have broken down
#WOW2024 | Week 11 | Can you filter a Small Multiples chart? Read More »
Introduction The Christmas Season is upon us and with that we bring you one last collab for the year – the Preppin’ Data team is back with a festive challenge for you all. The goal of that challenge is to get the data Tableau-ready. You will produce two outputs which are both used in this
#WOW2023 | Week 51 | Elf Economics Read More »
Introduction This week’s challenge is one I’ve been waiting to share with you. It has a bit of everything, so I hope you enjoy it! The goal is to visualize the Sales in a given year for different countries in Europe, with an indicator in the tooltip to identify whether this value has increased or
#WOW2023 | Week 3 | Calculating Year-On-Year Percentage Change Read More »
Introduction This week’s challenge is brought to you by a guest coach, my colleague Valerija Kirjackaja, who came across this problem at work and created a beautiful solution for it. How often do you get asked to re-create Excel tables in Tableau? On a scale from 1 to ‘I am never doing this again’ –
#WOW2022 | Week 35 | Conditional Table Formatting with Dynamic Headers Read More »
Introduction I’ve been wanting to create this challenge for some time, so I’m really glad to finally be releasing it. This challenge was inspired by some work I did last year where a client wanted to be able to visualize the number of hours that their team had spent working on different projects. What made
#WOW2022 | Week 30 | Dynamic Dates in a Heatmap Read More »
Introduction Working with financial data is hard. There are some calculations that make for long evenings to get right. One of those calculations is Time-Weighted Return. This challenge is simple: calculate the Time-Weighted Return Rate for a simple data source and return a line chart. Click to open in Tableau Public Requirements Dashboard Size: 400px
2022 – Week 29: What is the Time-Weighted Return? Read More »
Introduction My second favourite challenge in Tableau, after Table Calculations, is anything with Set Actions. Some of you may have already used these in previous challenges this year, but this week I am dedicating it to this wonderful (and sometimes tricky) Tableau functionality. Warning: this is not a beginner-friendly challenge! The problem I wanted to
#WOW2022 | Week 25 | Double drill-down with Set Actions Read More »
