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I will clean and prepare data for tableau dashboards and analysis
Data Analyst Dashboard Designer
I am a dashboard designer and data analyst with over 25 years of experience. I translate raw data into stories that inspire action using Tableau dashboards, advanced Excel models, and technical docume...
About this Gig
Need clean, consistent data before you build a Tableau dashboard? I'm Juanilta Broodryk, a Tableau-certified data analysis and visualization expert. I prepare supplied datasets so they are easier to analyze and visualize.
Depending on your data and agreed scope, I can standardize dates and categories, identify duplicates, handle missing values using your rules, reshape tables, and document the changes. I will flag unclear records and assumptions for your review rather than silently guessing. The deliverable can include a cleaned dataset and a concise summary of the work completed.
Please provide your files, a description of each field, known data issues, the expected output, and any business rules I should follow. If you need a Tableau Prep flow, multiple source joins, or repeatable refresh steps, mention those requirements when you contact me so I can scope the work correctly.
FAQ
What data can you clean and prepare?
I can work with suitable spreadsheet and CSV datasets for Tableau analysis. Share a sample and your desired output so I can confirm the required transformations.
How do you handle missing values and duplicates?
I use the rules you provide, document the changes, and flag ambiguous records for your decision. I will not invent values or remove records without an agreed rule.
Can you combine multiple files or tables?
Yes, if the files have a reliable way to relate them. Please provide the join keys and explain the expected result so I can scope the work accurately.
Will I receive a Tableau Prep flow?
A Tableau Prep flow can be included when it is requested and agreed in the order. Otherwise, the deliverable can be a cleaned dataset with a summary of the changes.
Can you make the process repeatable for future data?
Please describe your refresh frequency, file format, and recurring steps. A repeatable workflow can be scoped separately from a one-time cleanup.
How will I know what changed?
I provide a concise change summary covering the agreed cleaning steps, notable assumptions, and any unresolved issues that need your review.
