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CSV Pearson Correlation Matrix
Compute a complete Pearson correlation matrix from selected CSV columns with exact centered moments and checked approximate coefficients.
Pasted CSV, One UTF-8 CSV file
correlation-matrix.json
Browser only
Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.
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How to use this tool
- Enter the input and explicit options shown. A selected UTF-8 file wins its corresponding pasted text.
- Select Calculate Pearson matrix and inspect the complete stated conventions.
- Download correlation-matrix.json.
Examples
x=1,2,3 and y=2,4,6 give a perfect positive Pearson coefficient.
Limitations
- At most1 MiB UTF-8,10000 data rows,100 columns,100000 cells including headers,2–20 selected columns,400 matrix cells,2 million triangular updates,20 MiB output and30 seconds. At least2 complete data rows.
- Numeric cells admit an optional sign,1–18 total digits and up to6 fraction digits; no spaces or exponents. Selected empty/nonnumeric values refuse; every pair involving a constant column is null.
- Approximate scientific coefficients/deviations have12 significant digits and a checked relative bound5.1e-12; no correctly rounded decimal square-root, Spearman, imputation or statistical significance claim.
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