The product moment correlation coefficient is obtained by the formula
A. $${\text{r}} = \frac{{\sum {\text{xy}}}}{{{\text{N}}\sigma {{\text{x}}^2}}}$$
B. $${\text{r}} = \frac{{\sum {\text{xy}}}}{{{\text{xy}}}}$$
C. $${\text{r}} = \frac{{\sum {\text{xy}}}}{{{\text{N}}\sigma {\text{x}}\,\sigma {{\text{y}}^2}}}$$
D. $${\text{r}} = \frac{{\sum {\text{x}}\,\sum {\text{y}}}}{{\sigma {\text{x}}\,\sigma {{\text{y}}^2}}}$$
Answer: Option C
This Question Belongs to Agriculture >> Agricultural Statistics
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