Determine the appropriate nonparametric test. Weight of a Vehicle and Chest Inju
ID: 3157337 • Letter: D
Question
Determine the appropriate nonparametric test.
Weight of a Vehicle and Chest Injuries. Does the weight of a car affect chest injuries in a crash? To answer this question, data were obtained from car crash experiments conducted by the National Transportation Safety Administration. New cars were purchased and crashed into a fixed barrier at 35mph and the chest deceleration data are given below. Which test could be used to find out if heavier vehicles are safer in a crash?
Compact
57
57
46
54
51
52
Midsize
45
53
49
51
46
47
Full-size
44
45
39
58
44
45
Single Sample Signed Test
Wilcoxon Rank Sum Test
Wilcoxon Signed-Rank or Paired Sample Signed Test
Kruskal Wallis Test
Spearman Rank Correlation Coefficient Test
Compact
57
57
46
54
51
52
Midsize
45
53
49
51
46
47
Full-size
44
45
39
58
44
45
Explanation / Answer
Kruskal Wallis test is appropriate to compare a continuos outcome( number of cehst injuries in a car crash) in 3 independnet samples (Compact, Midsize, Fullsize)
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