If $$x = X - \overline X $$ and $$y = Y - \overline Y $$ be n number of pair terms, then
A. $$r = \frac{{\sum xy}}{{\sqrt {\sum {x^2}\sum {y^2}} }}$$
B. $$r = \frac{{n\sum xy}}{{\sqrt {\sum {x^2}\sum {y^2}} }}$$
C. $$r = \frac{{\sum xy}}{{n\sqrt {\sum {x^2}\sum {y^2}} }}$$
D. $$r = \frac{{\sum xy}}{{n\sum {x^2}}}$$
Answer: Option A
This Question Belongs to Commerce >> Business Statistics And Research Methods
Join The Discussion