use the Kruskal - Wallis test with the data set from Appendix B?. Car Crash Measurements? Refer to Data Set 13 in Appendix B and use the pelvis decel?eration measurements for small cars, midsize cars, and large cars. Use a 0.05 significance level to test the claim that the different size categories have the same median pelvis deceleration in the standard crash test. Do the data suggest that larger cars are safer?
Solution 2BSC Step 1 Kruskal-Wallis test satisfies the following two requirements. 1. Sample data must be independent and drawn according to simple random sampling. 2. Each sample must contain minimum of five entries. By using the data from exercise, we see that the samples are drawn at random, where the three samples are independent to each other. Hence the first requirement is satisfied. Now, we see that the sample size of Small is 7, sample size of Midsize is 7 and sample size of Large is 7. Hence the second requirement is satisfied. Therefore, the two requirements of Kruskal-Wallis test are satisfied.