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$
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I will clean and analyse your business datasets
I will analyse and visualize your business data
Hi, I'm Mumba, a data analyst. 👋
I turn messy datasets into clean, reliable data and clear insights using Excel, SQL, Python, and Power BI. Whether your file has duplicates, missing values, or incon...
About this Gig
Messy Excel file? I'll turn it into clean, trustworthy data and clear insights.
I'm Mumba, a data analyst working with Excel, Power Query, SQL and Power BI. I fix duplicates, blanks, typos and "ERROR / UNKNOWN" values, standardize dates and numbers, and rebuild missing values where the data allows it. Every order comes with a change log, so you know exactly what changed.
Need more? Add pivot tables, charts, a plain-language insights summary, or an interactive dashboard with one-click refresh.
Not sure which package fits? Message me before ordering.
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FAQ
What file types can you work with?
Excel (.xlsx, .xls), CSV, and Google Sheets exported to Excel or CSV. Please send the original file, not a screenshot or PDF.
What exactly do you fix when cleaning data?
Duplicates, blanks, typos, ERROR/UNKNOWN values, mixed date and number formats, extra spaces and inconsistent names. You also get a change log showing every fix.
Do you delete rows that have missing data?
No. If the data allows it, I rebuild the value (for example a total from quantity x price). If not, I label it Unknown and flag it, so your totals stay honest.
How many rows can you handle?
Basic: up to 2,000 rows. Standard: up to 10,000. Premium: up to 50,000. Have a bigger file? Message me and I'll send a custom offer.
How does the Premium one-click refresh work?
I build the dashboard and cleaning steps in Excel (Power Query). With a new file that has the same columns, you drop it in a folder and click Refresh All. It won't work if the columns change.
Which package should I choose?
Basic if you only need clean data. Standard if you also want insights. Premium if you want an interactive dashboard that updates with new files. Not sure? Message me before orderin
