Exam Scores

[nycmathguy]

See attachment.

For part (a), just plot the points on thexy-plane.

For part (b), the entrance test score of any student with a final exam score in the 80s is 65.

For part (c) a higher entrance test score does not imply a higher final exam score.

The following points prove my answer for part (c):

(58, 93), (44, 79), (29, 79), (48, 90), (53, 76)

How would you answer part.(c)?

 

[MathLover1]

This question is poorly worded, but I expect you are supposed to get a Least Squares Regression Line, so that you can use the equation to answer part (b) and determine if there is a trend in part (c).

This attachment shows the Excel scatter graph with line of best fit.

 

[nycmathguy]

This question is poorly worded, but I expect you are supposed to get a Least Squares Regression Line, so that you can use the equation to answer part (b) and determine if there is a trend in part (c).

This attachment shows the Excel scatter graph with line of best fit.

This means my effort is wrong.