Transaction Item1 Item2 Item3

1	noodles	spaghetti sauce	Parmesan cheese
2		spaghetti sauce
3			Parmesan cheese
4	noodles	spaghetti sauce	Parmesan cheese
5	noodles	spaghetti sauce
6		spaghetti sauce
7	noodles
8			Parmesan cheese
9		spaghetti sauce	Parmesan cheese
10	noodles

Given the above transactions:

For the market basket rule:

IF noodles AND spaghetti sauce THEN Parmesan cheese

1.1 What is the support for the rule?

1.2 What is the confidence for the rule?

1.3 How should the following market basket rule be interpreted?

lhs rhs support confidence lift

{Class=3rd, Survived=No} => {Age=Adult} 0.2162653 0.9015152 0.9484870

a The probability is .216 that if a person in 3^rd class did not survive, then the person was an adult.

b. An adult in 3^rd class did not survive in 21.6% of the cases.

c. Given that a person in 3^rd class did not survive, then the probability is .216 that the person was an adult.

d. The probability is .216 that an adult in 3^rd class did not survive.