The data analytics on determining fraud transactions may involve association rule mining. The following table shows a list of credit card transactions. Please work out the support and confidence of rule {Middle-aged user, between 13 and 21, Internet Channel} ->{Average amount}, and explain the meanings of the two values. List your mathematic steps please.

Transaction ID

	Age of user	Time of transaction	Channel of transaction	Amount of Transaction
1	Old	Between 7 and 13	POS channel	Low
2	Young	Between 0 and 7	Mobile channel	Average
3	Middle-aged	Between 13 and 21	Internet channel	Average
4	Middle-aged	Between 21 and 24	Mobile channel	High
5	Young	Between 21 and 24	Mobile channel	Low
6	Old	Between 12 and 21	POS channel	Average
7	Middle-aged	Between 13 and 21	Internet channel	Average