Correlation Calculator

Calculate Pearson correlation, covariance, and linear association strength from paired numeric data

Example Results

2 examples

Measure study time vs test score correlation

Use paired observations to see whether more study time is associated with higher scores

{
  "result": {
    "correlation": 0.9988,
    "rSquared": 0.9976,
    "covarianceSample": 13.75,
    "interpretation": "positive very strong correlation"
  }
}

View input parameters

{ "pairedData": "1, 52\n2, 57\n3, 63\n4, 68\n5, 74", "xValues": "", "yValues": "", "precision": 4 }

Check correlation from aligned X and Y series

Enter two aligned lists when the dataset is already split across columns or arrays

{
  "result": {
    "correlation": 0.996,
    "rSquared": 0.992,
    "covarianceSample": 180
  }
}

View input parameters

{ "pairedData": "", "xValues": "10, 20, 30, 40, 50", "yValues": "8, 14, 22, 29, 36", "precision": 3 }

Data Pairs

X Values (Optional)

Y Values (Optional)

Decimal Precision

Key Facts

Category: Math & Numbers
Input Types: textarea, text, number
Output Type: json
Sample Coverage: 0
API Ready: Yes

Overview

Correlation Calculator is an online math & numbers tool for calculate pearson correlation, covariance, and linear association strength from paired numeric data. It is especially useful when working with numeric data content.

When to Use

•Use it when you need to convert numeric data content quickly in the browser.
•Helpful for math & numbers workflows that need repeatable inputs and fast results.
•Useful when you want to test input and output behavior before integrating the workflow elsewhere.

How It Works

•Provide Data Pairs, X Values (Optional), Y Values (Optional), Decimal Precision as input to the tool.
•The tool processes the request and returns a json result.
•For repeatable workflows, use the API endpoint shown on the page after validating the result interactively.

Use Cases

Convert numeric data data during debugging or QA.

Validate expected output before using the API or automation flows.

Compare small variations of input to understand output differences quickly.

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FAQ

What does Correlation Calculator do?

Correlation Calculator helps you convert numeric data content online without setting up a separate local script or app.

When should I use this tool?

Use it when you need a quick convert workflow, want to verify output, or need a browser-based utility for math & numbers tasks.

Can I try this tool with sample data?

Yes. Try short representative inputs first, then move to larger or more complex cases once the output looks correct.

What inputs does Correlation Calculator accept?

Correlation Calculator accepts Data Pairs, X Values (Optional), Y Values (Optional), Decimal Precision.

Is there an API for Correlation Calculator?

Yes. The tool page includes an API endpoint so you can move from manual testing to scripted usage.

API Documentation

Request Endpoint

POST /en/api/tools/correlation-calculator

Request Parameters

Parameter Name	Type	Required	Description
pairedData	textarea	No	-
xValues	text	No	-
yValues	text	No	-
precision	number	No	-

Response Format

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

JSON Data: JSON Data

AI MCP Documentation

Add this tool to your MCP server configuration:

{
  "mcpServers": {
    "elysiatools-correlation-calculator": {
      "name": "correlation-calculator",
      "description": "Calculate Pearson correlation, covariance, and linear association strength from paired numeric data",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=correlation-calculator",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

If you encounter any issues, please contact us at [email protected]

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