Question

Question 6 (1 point) Orange trees - In the 1960s, a botanist was conducting a research on orange trees. He wanted to figure out the relationship between the growth of trees and their ages. The botanist gathered a random sample of 35 orange trees and recorded the circumference of the tree in mm and the age of the tree in days Circumference of tree is the X variable and Age of tree is the Y variable in this scenario. Using the sample data, the botanist finds the equation of the estimated regression line for predicting the Y variable." The botanist calculates the residual for the Amber's Age to be 9.1655 days. Did the regression model under-estimate or over-estimate Amber's Age? Note: Numbers are randomized for each instance of this question. Use the numbers given above. Under-estimate Over-estimate

Answer 1

solution Here we know that residual means y- ý = observed value - predicted value. here we have the residual value 9:1655 so this is positive value means that observed value es more and the expected value is less. So from the regression model we expected (predicated to less. so, we can say that underestimate Amber's age-