Question
In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The date follow:
Number of Cups of Coffee 3,2,4,6,5,1,7,3
Stress Level 5,3,3,9,4,2,10,5
Calculate a Pearsons r to determine the type and strength of the relationship between caffeine and stress level.
Determine the regression equation for this correlation coefficient.
Number of Cups of Coffee 3,2,4,6,5,1,7,3
Stress Level 5,3,3,9,4,2,10,5
Calculate a Pearsons r to determine the type and strength of the relationship between caffeine and stress level.
Determine the regression equation for this correlation coefficient.
Answers
Kuai
r = .8519
yhat = 0.411 + 1.216x