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Hours GPA

1. 15.5 3.92

2. 9.2 2.33

3. 0.7 1.11

4. 15.5 3.92

5. 18 3.8

6. 19.7 3.5

7. 20 4

8. 18 3.7

9. 16.7 3.21

10. 21.9 3.69

1) Describe how the line of best fit and the correlation coefficient can be used to determine the correlation between the two variables in this graph. 2) Calculate the residuals for this scatterplot.

Hours GPA1 155 3922 92 2333 07 1114 155 3925 18 386 197 357 20 48 18 379 167 32110 219 3691 Describe how the line of best fit and the correlation coefficient c class=

Respuesta :

loumast

Answer:

Step-by-step explanation:

The closer the line of best fit is to the points the more accurate it is.  The correlation coefficient gives a numerical rank, where 1 is a perfect fit and the closer to 0 it is the less accurate it is.

I need the values of the line at the same x values as the scatterplot points.  After you have that take the difference of the value of the line of best fit and the corresponding scatterpoint.  if the point is higher than the line then the resiual will be negative and if the point is lower the residual will be positive.  Do you have the equation of the line of best fit?

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