A(asbestos) | a(not asbestos) | |
B(mesothelioma) | (AB)=77 | (aB)=20 |
b(not mesothelioma) | (Ab)=93 | (ab)=160 |
(a)Since we have
(b) we can use Yules coefficient of association which is given by
So attribute A,B are independent if Q=0, if Q=1 then A,B are completely associated on the other hand if Q=-1 then complete dissociation so so here we have Q =0.7376 which means high degree of positive association between two attribute A,B
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