six kidney patients data on scrum phosphate and scrum proptein values are given below:
protein (gr/dl) : 1.00 1.05 1.40 1.65 1.70 2.80
phosphate(mg/dl) : 2.02 3.80 4.44 6.52 7.10 11.85
question 1:
1-calculate patients' protein and phosphate levels if there will be a linear relationship ? Explain the relationship.
2- patients with protein levels 1.43 : 2,3 : 3.7 . Calculate predicted values of phospahte values and explain how good are your estimations ?
3- R2 degree of correctness given as 0.81 , calculate the correlation coefficient between the propertiez?
question 2:
seven students scores from midterm and final exams are given below:
midterm score : 35 45 50 70 65 60 55
final score : 55 65 70 80 75 70 65
a- calculate correlation coefficient between two exams and make a comment.
b-calculate regression coefficient of final scores againts midterm scores and expalian what it means?
c- using midterm scores ,in order to predict final scores develop a regression equation .using this equation indicate the degree of correctness of your estimations by calculation.
