Question

distance	injury	non injury	total	odds ratio
0-1 km	130	65	195
1-2 km	20	10	30
2-4 km	36	19	55
4-6 km	24	11	35
total	210	105	315

Find the odds ratio. Use the Chi-Square Statistic to test the association between bike injury and distance to urban area. Interpret your resulting Chi-Square Statistic and show work.

Answer 1

since the p value is less than 0.05 . We accept Ho at 5% level of significance i.e. is no asacoassoci in the injury and distance.