A Taiwan Electronics Company Exports Personal Computers PCs) to the U.S

Essay

A Taiwan electronics company exports personal computers PCs) to the U.S. Their PC sales in thousands) over the past five years are given below.
$$\begin{array} { c c } \text { Year } & \text { Sales } \\\hline1 & 6 \\2 & 9 \\3 & 13 \\4 & 15 \\5 & 20\end{array}$$
a. What is the regression equation if the company wants to predict sales?
b. What is the forecast for sales in year 6?