Following are forecasts of worldwide annual cell phone handset sales. $$\begin{array} { | l | l | l | l | }
\hline \text { Year } x & 3 & 5 & 7 \
\hline \text { Sales } y \text { (Millions) } & 500 & 600 & 800 \
\hline
\end{array}$$
( $x = 3$ represents 2003)
Complete the table. $$\begin{array} { | l | l | l | l | l | }
\hline & x & y & x y & x ^ { 2 } \
\hline & 3 & 500 & & \
\hline & 5 & 600 & & \
\hline & 7 & 800 & & \
\hline \text { Totals } & & & & \
\hline
\end{array}$$
Obtain the associated regression line. (Round coefficients to 2 decimal places if necessary.)
Slope: __________
Intercept: __________
Use your regression equation to project the 2016 sales. (Round the answer to 2 decimal places if necessary.)
__________

Question

Following are forecasts of worldwide annual cell phone handset sales. $$\begin{array} { | l | l | l | l | } 
\hline \text { Year } x & 3 & 5 & 7 \
\hline \text { Sales } y \text { (Millions) } & 500 & 600 & 800 \
\hline
\end{array}$$ ​
( $x = 3$ represents 2003)
Complete the table. $$\begin{array} { | l | l | l | l | l | } 
\hline & x & y & x y & x ^ { 2 } \
\hline & 3 & 500 & & \
\hline & 5 & 600 & & \
\hline & 7 & 800 & & \
\hline \text { Totals } & & & & \
\hline
\end{array}$$ ​
Obtain the associated regression line. (Round coefficients to 2 decimal places if necessary.)
Slope: __________
Intercept: __________
Use your regression equation to project the 2016 sales. (Round the answer to 2 decimal places if necessary.)
__________

Quizplus · Accepted Answer

The Answer of Following are forecasts of worldwide annual cell phone handset sales. $$\begin{array} { | l | l | l | l | } 
\hline \text { Year } x & 3 & 5 & 7 \
\hline \text { Sales } y \text { (Millions) } & 500 & 600 & 800 \
\hline
\end{array}$$ ​
( $x = 3$ represents 2003)
Complete the table. $$\begin{array} { | l | l | l | l | l | } 
\hline & x & y & x y & x ^ { 2 } \
\hline & 3 & 500 & & \
\hline & 5 & 600 & & \
\hline & 7 & 800 & & \
\hline \text { Totals } & & & & \
\hline
\end{array}$$ ​
Obtain the associated regression line. (Round coefficients to 2 decimal places if necessary.)
Slope: __________
Intercept: __________
Use your regression equation to project the 2016 sales. (Round the answer to 2 decimal places if necessary.)
__________

Following Are Forecasts of Worldwide Annual Cell Phone Handset Sales