Chi-square test of association Table 2 shows the data from the Mediterranean Diet and Health case study. The question is whether there is a significant relationship between diet and outcome. Ho = Table 2. Frequencies for Diet and Health Study. Outcome Diet Cancers Fatal Heart Disease Non-Fatal Heart Disease Healthy Total AHA 15 24 25 239 303 Mediterranean 7 14 8 273 302 Total 22 38 33 512 605 With expected outcomes in ( ) and X2 calculations in {} Outcome Diet Cancers Fatal Heart Disease Non-Fatal Heart Disease Healthy Total 15 24 25 239 AHA 303 14 8 273 Mediterranean 302 Total 22 38 33 512 605 X2 = degrees of freedom is equal to (r-1)(c-1) = Xzerit at p = 0.05 = Accept or reject Ho? Is there a significant relationship between diet and outcome