12. For a quarterly time series over the last 3 years (Year 1, Year 2, Year 3), the following linear trend expression was estimated: = 112 + 2.5t. The forecast for the first quarter of Year 4 is

	a.	136.2
	b.	147.9
	c.	144.5
	d.	150.1

13. A data set with 15,000 records was collected on web browsing history of web users. Using Data Mining, the top association rule was found and the following information is available about this rule:

A - Support	C - Support	Support	Confidence	Lift - Ratio	Antecedent	Consequent
880	1900	820			{Facebook, Twitter}	{You Tube}

The lift ratio of the rule is

	a.	7.12
	b.	3.18
	c.	4.25
	d.	7.36