4 marks For the following bivariate data, calculate the correlation coefficient by hand. What do you conclude about the
Posted: Thu Apr 28, 2022 7:35 am
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4 marks For the following bivariate data, calculate the correlation coefficient by hand. What do you conclude about the data? 1 3 4 78 8.5 9.5 12 13 y -3-0.5 -1 -40 -2 -4.5 -5.7 -7.1 -11 х 15
The correlation coefficient measures strength and direction of linear association. 2(x - 3)(yi-ỹ) 1 уі — ӯ r= Σ(x; - x)? Σ(Υ - y)2 n Sx Sy x VE, , n-1 (0-1) (93-9) ? R code: cor(x,y)
4 marks For the following bivariate data, calculate the correlation coefficient by hand. What do you conclude about the data? 1 3 4 78 8.5 9.5 12 13 y -3-0.5 -1 -40 -2 -4.5 -5.7 -7.1 -11 х 15
The correlation coefficient measures strength and direction of linear association. 2(x - 3)(yi-ỹ) 1 уі — ӯ r= Σ(x; - x)? Σ(Υ - y)2 n Sx Sy x VE, , n-1 (0-1) (93-9) ? R code: cor(x,y)