Question

Eighty eight residents of a city were interviewed during sample survey are classified below, according to their smoking and tea drinking habits. Calculate Yule’s coefficient of Association and comment on its value.

	Smokers	Non-smokers
Tea drinkers	35	33
Non tea drinkers	8	12

Answer 1

Let A and B denotes smokers and Tea drinkers, a and a denotes Failed and Unmarried. The 2 × 2 contingency table can be prepared as:

Note: In the above table figure in bold letter are adjusted figures. Yule’s Coefficient of Association:

Q = 0.2708

There exists a low degree of positive association between smoking (A) and tea drinking (B)