What's the difference between Pearson and Spearman?

Pearson measures linear relationships; Spearman measures monotonic (rank-based) relationships. Spearman is more robust to outliers.

Does correlation imply causation?

No, correlation and causation are different. Correlation may be caused by a third variable affecting both.

How many data points are needed?

A minimum of 3 pairs is required, but 30 or more pairs are recommended for reliable results.

Yes, all processing is done in your browser.

Correlation Coefficient Calculator

Calculate Pearson and Spearman correlation coefficients between two data sets. Visualize data relationships with a scatter plot.

Data Points

#XY

Share this tool

📖

How to Use

Step 1

Enter Data

Enter two sets of data (X column and Y column)

→

Step 2

Calculate Correlation

Press calculate to auto-compute the correlation coefficient

→

Step 3

Check Results

Check correlation coefficient, scatter plot, and correlation strength

✨

Features

Multiple Coefficients

Calculate both Pearson (linear) and Spearman (rank) correlations

Scatter Plot

Display a scatter plot to visually confirm the correlation

P-value Display

Calculate p-values to determine statistical significance of the correlation

❓

FAQ

A measure from -1 to 1 indicating the strength and direction of association between two variables. Closer to 1 means strong positive, -1 means strong negative correlation.

🔗Related Tools

🔢

Math Tools

Percentage Calculator

Calculate percentages easily. Instantly compute ratios, rate of change, and percent values.

💰

Math Tools

Split Bill Calculator

Easily split bills for dining and parties. Instantly calculate per-person amount.

🎲

Math Tools

Random Number Generator

Generate random numbers within a specified range. Customize count, decimal places, and duplicate control.

🔄

Math Tools

Number Base Converter

Convert between binary, octal, decimal, and hexadecimal. Also supports custom base conversion (base 2 to 36).

🎓

Math Tools

GPA Calculator

Calculate your GPA (Grade Point Average) from course grades. Supports credit-weighted calculations.

⚖️

Math Tools

Ratio Calculator

Calculate, simplify, and solve ratios. Solve for unknown values in A:B = C:D proportions.