Question

As online attacks persist, spending on information security software continues to rise. The following table gives the forecast for the worldwide sales (in billions of dollars) of information security software through 2007 (t = 0 corresponds to 2002).

Year, t	0	1	2	3	4	5
Spending, y	6.8	8.2	9.6	11	12.4	14.6

(a) Find an equation of the least-squares line for these data. (Round all coefficients to four decimal places.)
y =

(b) Use the result of part (a) to forecast the spending on information security software in 2008, assuming that the trend continues. (Round your answer to one decimal place.)
$ __________ billion

Answer 1

(a) The least square line can be computed

(answer till 4 decimal places)

b)

The year 2008 represents the value of t equal to 6

Note - Post any doubts/queries in comments section.