Excel Data Cleaning Practice Workbook — 28 Exercises, Solutions & Quality Checklist

Turn messy spreadsheet practice into a clear cleanup workflow. Work through 28 hands-on exercises using 90 fictional source records, compare your results with solutions, then check your work with a quality checklist.

WHO IT IS FOR

Beginners learning Excel data cleaning, data-entry learners, administrative-support learners and freelancers practising spreadsheet cleanup. Basic spreadsheet navigation is needed.

WHAT YOU RECEIVE

• An 11-sheet Excel workbook (.xlsx) with raw contacts and orders, editable practice copies, corrected reference datasets, 28 exercises, Formula Lab, answer key and quality checklist.

• A 7-page PDF user guide and a separate 6-page PDF answer guide.

• Progress dropdowns, 12 final quality checks, README and personal-use licence.

SKILLS YOU PRACTISE

Duplicate detection with COUNTIF; blank-value checks; TRIM, PROPER, LOWER and IF; date cleanup; text-to-number conversion; number formatting; sorting; filtering; basic data validation; error identification and reconciliation of valid totals. Solutions preserve unresolved information instead of inventing it.

HOW TO USE IT

1. Save a working copy and keep the raw sheets intact.

2. Follow the Exercises sheet and work in the Clean sheets.

3. Compare by record ID with the solutions and answer guides.

4. Complete the quality checklist and record your progress.

SOFTWARE REQUIREMENTS

Microsoft Excel is recommended, especially desktop Excel for sorting, filters and validation. Software is not included. No macros, add-ins or external connections are needed. Google Sheets/other-app compatibility is not certified.

COMMON QUESTIONS

Is this a course or certificate? It is a self-paced practice resource, with no live teaching or certification.

Does it contain real customer data? No. All practice records are synthetic.

What happens after purchase? Download one ZIP containing the XLSX, two PDFs, README and licence after successful payment. Extract the ZIP before opening the workbook. No physical item is shipped.

Can I redistribute it? The files are for single-purchaser practice use. You may use your own completed outputs, but may not resell or redistribute the original files.

QUALITY AND ORIGINALITY

Developed with AI assistance and reviewed/tested: formulas, recalculation, workbook structure, PDFs and previews were checked. Native desktop Excel was unavailable for testing. This independent resource has no Microsoft affiliation and does not guarantee employment or income.

FILE HELP

For corrupt, inaccessible or materially misdescribed files, contact the seller through your order receipt. Applicable statutory consumer rights remain in effect.