# [Cella](/en/experts/cella) - AI form

> Clean data, build formulas, analyze spreadsheets, and turn tables into charts and decisions.

## What is Cella?

Cella is [Wery](/en/experts/wery)'s spreadsheet and data analysis expert, responsible for reading Excel/CSV/TSV, cleaning data, interpreting fields, calculating metrics, generating formulas, making charts, and turning spreadsheet insights into actionable conclusions.

## Entry and document preparation

Cella is suitable for starting with real data files.

1.  Lock Cella, or describe "Analyze Table/Excel/CSV/Data" to let Wery route.
2.  Upload xlsx, csv, tsv or select a historical table from Assets.
3.  Explain the meaning, time frame, business problem, and target metrics of each table.
4.  If a chart is required, indicate the type of chart or question you want to answer.
5.  After generation, open the table panel and continue viewing it in WeryOffice or table preview.

## Analysis task type

Cella doesn’t just “read tables”, it breaks down data problems into verifiable steps.

- Data overview: fields, number of rows, missing values, outliers, time range.
- Cleaning and organizing: unified format, duplicate values, classification normalization, and null value processing.
- Indicator calculation: growth rate, conversion rate, proportion, mean, median, month-on-month and year-on-year.
- Perspective analysis: Comparison by region, channel, product, time, and user grouping.
- Chart generation: trend lines, bar charts, pie charts, scatter plots, heat maps or leaderboards.
- Business Interpretation: Translate numbers into assumptions, risks, and next steps.

## Formulas, editing and visualization

Cella can generate formulas and table structures, but user-reviewable paths should be retained.

- Formula: Describe the purpose of the formula, reference columns, and expected results.
- New columns: When calculating indicators or marking groupings, they should be clearly named.
- Diagrams: Diagrams should address a clear problem and should not be drawn just for decoration.
- Multiple sheets: First confirm which sheet to use or how to merge.
- WeryOffice: The generated results can be viewed and edited in the table panel.

## Limitations and Reviews

The quality of a data task depends on the raw data and field descriptions.

- Complex merged cells, macros, external joins, and hidden formulas may affect reading.
- When a field name is unclear, Cella should first explain the assumption or ask.
- When the sample is too small, severely missing, or has inconsistent calibers, firm conclusions cannot be forced.
- Important business conclusions require people to review the original data, calculation caliber and chart range.
- When you need a formal report, leave your insights to [Xdoc](/en/experts/xdoc); when you need a report, leave it to [PPTea](/en/experts/pptea).

## Prompt word example

The form prompt should write about business issues, rather than just saying "analyze it."

### sales analysis

Analyze this sales data to identify growth sources, downside risks, unusual orders by month, region, and channel, and output 5 management recommendations.

### Funnel analysis

Calculate the registration-to-payment conversion rate based on this user behavior table, group by source channel, and find the link with the lowest conversion.

### Chart making

Generate trend charts, channel share charts, and TOP10 product rankings for this monthly revenue table, and explain what each chart illustrates.

## Image and video bits

The Cella page should showcase uploads, field explanations, charts, and table panels.

### Image and video list

**Image: Data upload and field identification**  
Demonstrates identification of sheets, fields and row numbers after Excel/CSV upload.

**Image: Charts & Insights**  
Display trend charts, rankings and text conclusions.

**Video: From Excel to Business Conclusions**  
Demonstrate cleaning, calculations, charting, and reporting handoffs.

## FAQ

### Q: Can Cella directly modify Excel?

Table structures can be generated or edited, but complex formatting, macros, and external links require review.

### Q: Can I analyze the table with only screenshots?

Screenshots can be used for identification and interpretation, but for formal analysis it is best to upload xlsx/csv.

### Q: Will Cella automatically determine the business caliber?

Hypotheses will be made, but you should add field meanings and calibers to avoid erroneous conclusions.

### Q: Can charts be put into PPT?

Yes. Cella first makes charts and insights, and then gives it to PPTea to generate reports.

### Q: What should I do if the data is sensitive?

Try to desensitize it as much as possible before uploading, and only retain the fields required to complete the analysis.