> ## Documentation Index
> Fetch the complete documentation index at: https://docs.wissly.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Analysis and Processing

> Analyze and process Excel data and numerical information

Wissly can also analyze Excel files and documents containing data. If you ask for the analysis to be written up "as a report," the result is placed on the [Canvas](/en/create/canvas) for editing.

## Data Lookup

When finding specific numbers or data:

```
"Show me monthly revenue data for 2024"
"What's the budget status by department?"
"What were product sales volumes last quarter?"
```

## Calculations and Aggregations

When calculating or aggregating data:

```
"Calculate total revenue for the first half of this year"
"Calculate average headcount by department"
"Calculate year-over-year revenue growth rate"
```

## Trend Analysis

When identifying changes over time:

```
"Analyze monthly revenue trends"
"Show customer churn rate changes over the past 12 months"
"What's the quarterly growth rate trend?"
```

## Example: Finance Team Data Analysis

**Question:**

```
"From 2024 expense data, show the top 5 items with largest year-over-year increases and their growth rates"
```

**Wissly Answer:**

```
Top 5 expense increases year-over-year in 2024:

1. Cloud infrastructure costs: +45.2% (120M → 174M won) [1]
2. Marketing expenses: +32.8% (80M → 106M won) [1]
3. Personnel costs: +18.5% (1.5B → 1.78B won) [2]
4. Outsourced development: +15.3% (200M → 230M won) [1]
5. Travel/Transportation: +12.1% (30M → 34M won) [2]

[1] 2024_Expense_Analysis_Detail.xlsx
[2] HR_Salary_Status_2024.xlsx
```

<Warning>
  For complex calculations or large-scale data processing, please verify accuracy with the original data.
</Warning>

<Card title="Writing with the Canvas" icon="pen-ruler" href="/en/create/canvas">
  Turn your analysis into a draft you can edit.
</Card>