A data set obtained to study the protective effect of helmets used in a contact
ID: 3133421 • Letter: A
Question
A data set obtained to study the protective effect of helmets used in a contact sport includes the following variables.
Severity was measured 10 separate times for each combination of helmet model and side of impact. The severity of impact was modeled as a function of the two categorical variables, model and side.
1. Compare the residual plots for the two models, and explain which ones are better and why.
Model one of 4 helmet models (brands): A, B, C, or D Side: helmet side of impact: Front or Back a continuous measure of severity of impact transmitted through the helmet severity:Explanation / Answer
The residuals for model 2 are looking more convincing
The residuals are equally distributed on both sides of the fitted line.
More equal the distribution on both sides of the curve,more better is the model.