Answer: A
O The median-median regression line is a better prediction.
Step-by-step explanation:
The given median-median line for a dataset is
y 1.133x+ 0.489
The least-squares regression line for the same dataset is
y = 1.068x0.731
The given point is (50,60).
Substitute x=50 in each given equation.
y = 1.133(50) + 0.489
57.139
y = 1.068(50) + 0.731 = 54.131
Since the value of median-median line at x=50 is near to 60 than the value of least-squares regression at x=50.
The median-median line regression line is a better prediction. Therefore the correct option is A.
