Question 8 Below is the least squares regression output for tree #2. Simple linear regression results: Dependent Variable: \(\Psi\) leaf water potential Independent Variable: sap flow velocity \(\Psi\) leaf water potential = -0.345 - 0.0552 sap flow velocity Sample size: 6 For a tree with sap flow velocity of 15, what would be the predicted leaf water potential? +1.173 -1.173 0.483 -0.483 1 pts
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1. Below is the least squares regression output for tree #2. Simple linear regression results: Dependent Variable: Ψ leaf water potential Independent Variable: sap flow velocity Ψ leaf water potential = -0.345 - 0.0552 sap flow velocity Sample size: 6 Interpret the slope: (a) -0.0552 is the average decrease in leaf water potential for each unit of sap flow velocity (b) -0.0552 is the average decrease in sap flow velocity for each unit of sap flow velocity (c) -0.345 is the average decrease in sap flow velocity for each unit of leaf water potential (d) -0.345 is the average decrease in leaf water potential for each unit of sap flow velocity
Md.Daniyal A.
David N.
1) Determine the equation for the least-squares regression line for the following data. Age of Tree (years) | 5-yr Growth (cm) 5 | 70 9 | 150 10 | 230 11 | 165 13 | 305 14 | 290 15 | 300 18 | 380 2) Use the least-squares regression line from question one to predict the 5-yr growth of a 7 year old tree. 3) Using the data from question 1, create the residual plot.
Adi S.
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