Answer:
1. figure 4 ; 2. figure 1; 3. figure 3 .
Step-by-step explanation:
1. The correlation coefficient is closest to 1 for the data-set relating to figure 4.
2. The least evidence of a linear relationship is shown by the data-set relating to figure 1.
3.The correlation coefficient r appear to be equal to -1 for the data-set relating to figure 3.
We know that as more the modulus of the correlation coefficient (r) approaches 1, more the figure related to the data-set starts to resemble a straight-line.
The line of linear regression takes a positive slope for a positive value of r and takes a negative slope for a negative value of r.
Moreover, more the modulus of r approaches 0, more there is absence of linearity in the scatter plot.
