Mathematics · Statistics
कार्ल पियर्सन ने किस दशक में गुणन-आघूर्ण सहसंबंध गुणांक (product-moment correlation coefficient) का सूत्र प्रतिपादित किया था?
- 11940 के दशक में
- 21980 के दशक में
- 31890 के दशक में✓
- 41900 के दशक में
सही उत्तर देखें
1890 के दशक में
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