Teaching CSIR NET Mock Test Series Engineering Mathematics Probability and Statistics Correlation Analysis

यदि X पर Y की प्रतिक्रमण रेखा Y = 30 - 0.9X है और मानक विचलन Sx = 2 और Sy = 9 हैं, तो सहसंबंध गुणांक rxy का मान है:

1
-0.3
2
-0.2
3
0.2
4
0.3
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