Question: For (x,y) groups 4 different practices is made. (a,b,c,d) to test the nereden groups whether there is a difference? a b C d X

For (x,y) groups 4 different practices is made. (a,b,c,d) to test the nereden groups whether there is a difference? a b C d X 150 30 30 90 Y 90 20 20 10 80 = 0.05

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