Teaching EMRS PGT Mock Test 2023 Mathematics Statistics Correlation and Regression

समाश्रयण गुणांक b2 और b1 हैं। तो सहसंबंध गुणांक r क्या है?

1
\(\dfrac{b_1}{b_2}\)
2
\(\dfrac{b_2}{b_1}\)
3
\(±\sqrt{\left(b_1b_2\right)}\)
4
b1b2
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