Question

Coefficient of correlation between x and y for the following data will be approximately

x :	15	16	17	17	18	20	10
y :	12	17	15	16	12	15	11

• A. 0.50
• B. 0.53
• C. – 0.50
• D. – 0.53

Answer 1

Answer: (B)

0.53

Answer 2

Use $r = \frac{\sum(x - \bar{x})(y - \bar{y})}{\sqrt{\sum(x - \bar{x})^{2}\sum(y - \bar{y})^{2}}}$.