THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below. 
-If the least squares regression line 
= -2.88 + 1.77x and the coefficient of determination is 0.81,the coefficient of correlation is:
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Dandruff
A common scalp condition marked by flaking and sometimes itching.
Alopecia
Partial or complete loss of hair; baldness.
Edentulous
A condition characterized by the lack of teeth in an individual's mouth, which can affect their ability to eat and speak.
Alzheimer's Disease
A progressive neurological disorder characterized by memory loss, cognitive decline, and changes in behavior, leading to impairment in daily functioning.
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