Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Engineering Mathematics Probability and Statistics Regression Analysis
Which formula may be used for calculation of coefficient of correlation ?
1
x = byx × bxy
2
\(\rm r=\sqrt{b y x \times b x y} \)
3
\(\rm r=\sqrt{b y x+b x y}\)
4
More than one of the above
5
None of the above