Step 1
Use a graphing calculator to graph the values in the table and the get the eqaution of the line of best fit and the regression
Step 2
Write the equation of the line
[tex]\begin{gathered} \text{The equation of a line is given as} \\ y=\text{ ax+b} \\ a=\text{ -3.8} \\ b=\text{ 94.4} \\ \text{Hence } \\ y=-3.8x+94.4 \end{gathered}[/tex]
Step 3
Write the correlation coefficient , r
[tex]r\text{ = }-0.9444[/tex]
Since r is closer to -1 than 1 then there is a negative relationship between the two variables.
