Comparison of Predicted Results vs Actual ObservationsA data review was conducted to evaluate the impact of animal-diet nutrient density (x) and subsequent final body weight (y). Data represented a true response of the input across the entire population to be studied. The regression lines developed were then input into an empirical model to predict body weight response if one or more of the nutrients were changed. A subsequent study was conducted, and the data review yielded a predicted body weight to be compared to the actual observation of the replicate.
How do I compare the fit of the observed data to the predicted data from the model? Model is quadratic with a fixed intercept.
Advanced Statistical ModelingBasic Data Analysis and Modeling