Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Engineering Mathematics Probability and Statistics Correlation Analysis
Karl Pearson’s co-efficient of correlation between two variables is
1
the product of their standard deviations
2
the square root of the product of their regression co-efficients
3
the co-variance between the variables
4
More than one of the above
5
None of the above