Data Analysis
Step-by-step independence testing for 2×2 / R×C contingency tables: Pearson χ², Yates, G-test, Fisher exact, effect sizes, adjusted residuals, Cochran rule and optional Chapman estimate.
Call this tool from your code in three languages.
curl -X POST 'http://127.0.0.1:3003/en/api/tools/contingency-table-chi-square-fisher-exact-cramer-v-tutor' \
-H 'Content-Type: application/json' \
-d '{"table":"30, 20\n20, 30","yates":"auto","alpha":0.05,"chapman":false}'Send a POST request with your inputs as JSON. File parameters require a separate upload first.
POST http://127.0.0.1:3003/en/api/tools/contingency-table-chi-square-fisher-exact-cramer-v-tutor| Name | Type | Required | Description |
|---|---|---|---|
| table | textarea | Yes | — |
| yates | select | No | — |
| alpha | number | No | — |
| chapman | checkbox | No | For 2×2 mark-recapture data: N̂ = (a+1)(b+1)/(c+1) − 1. |
HTML result
{
"result": "<div>Processed HTML content</div>",
"error": "Error message (optional)",
"message": "Notification message (optional)",
"metadata": {
"key": "value"
}
}Add this tool to your Model Context Protocol server so AI agents can list and call it.
Add this block to your MCP client configuration:
{
"mcpServers": {
"elysiatools-contingency-table-chi-square-fisher-exact-cramer-v-tutor": {
"name": "contingency-table-chi-square-fisher-exact-cramer-v-tutor",
"description": "Step-by-step independence testing for 2×2 / R×C contingency tables: Pearson χ², Yates, G-test, Fisher exact, effect sizes, adjusted residuals, Cochran rule and optional Chapman estimate.",
"baseUrl": "http://127.0.0.1:3003/mcp/sse?toolId=contingency-table-chi-square-fisher-exact-cramer-v-tutor",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "contingency-table-chi-square-fisher-exact-cramer-v-tutor",
"arguments": {
"table": "30, 20\n20, 30",
"yates": "auto",
"alpha": 0.05,
"chapman": false
}
}
}Questions or issues? Contact [email protected]