The following partial minitab printout of a regression analysis where x is the length in centimeters and y is the weight in kg of American Black Bears. (Source: fieldtripearth.org)
Regression Analysis: Weight (kg) versus Total Length (cm)
Analysis of Variance
Source DF Adj SS Adj MS F-Value P-Value
Regression 1 4272.5 4272.5 9.82 0.011
Error 10 4350.4 435.0
Lack-of-Fit 7 3825.4 546.5 3.12 0.189
Pure Error 3 525.0 175.0
Total 11 8622.9
Using alpha = 0.05 answer the questions below:
Is there reason to believe there is a lack of fit? enter yes or no.
Is the equation useful for predicting weight given length of American Black Bears?