A math professor is trying to determine if her students' math grades are consistent with their grades in three other courses.She has 30 students who are all taking Math,Science,English,and an Elective course.She assigns scores of 4,3,2,and 1 for each grade of A,B,C,and D,respectively.Here's a regression model to predict the math grade based on the other courses:
Dependent variable is: Math
R-squared = 84.4% R-squared (adjusted)= 82.6%
s = 0.3789 with 30 - 4 = 26 degrees of freedom 
-Here is the scatterplot of externally Studentized residuals against predicted values: 
Comment on what this diagnostic display indicates.
Definitions:
Muscular Tension
Physical strain or discomfort in the muscles, often resulting from overexertion or stress.
Primary Prevention Activities
Initiatives designed to prevent problems or health issues before they occur, rather than treating them after they have developed.
Distress
A state of emotional or physical pain or suffering.
Positive Well-Being
A state of general happiness and satisfaction with life, characterized by positive emotions and a sense of purpose.
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