Five paired observations were recorded:
(1, 2),(2, 4),(3, 8),(4, 6),(5, 10)(1,\,2),\quad (2,\,4),\quad (3,\,8),\quad (4,\,6),\quad (5,\,10)(1,2),(2,4),(3,8),(4,6),(5,10)
Pearson's sample correlation coefficient is
r=∑(xi−xˉ)(yi−yˉ)∑(xi−xˉ)2 ∑(yi−yˉ)2r = \frac{\sum (x_i - \bar{x})(y_i - \bar{y})}{\sqrt{\sum (x_i - \bar{x})^2 \; \sum (y_i - \bar{y})^2}}r=∑(xi−xˉ)2∑(yi−yˉ)2∑(xi−xˉ)(yi−yˉ)
What is the exact value of rrr for this data?
Select all that apply.
r=1.80r = 1.80r=1.80
r=0.90r = 0.90r=0.90
r=0.45r = 0.45r=0.45
r=0.045r = 0.045r=0.045