Karl Pearson’s co-efficient of correlation between two variables is
A. the product of their standard deviations
B. the square root of the product of their regression co-efficients
C. the co-variance between the variables
D. None of the above
Answer:B
Karl Pearson’s co-efficient of correlation between two variables is
A. the product of their standard deviations B. the square root of the product of their regression co-efficients C. the co-variance between the variables D. None of the above