The data below(stored in Desktoplaptop) represent the hours per day spent by American desktop/laptop users from 2008 to 2014.

a. Plot the time series. 

b. Fit a three-year moving average to the data and plot the results. 

c. Using a smoothing coefficient of W = 0.50, exponentially smooth the series and plot the results. 

d. What is your exponentially smoothed forecast for 2015? 

e. Repeat (c) and (d), using W = 0.25. 

f. Compare the results of (d) and (e). 

g. What conclusions can you reach about desktop/laptop use by American users?

Transcribed Image Text:

Year Hours per Day Year Hours per Day 2008 2.2 2012 2.5 2009 2.3 2013 2.3 2010 2.4 2014 2.4 2011 2.6 Source: Data extracted from E. C. Baig, "The Hottest Digital Trends," USA Today, May 26, 2015, p. BI. Year Hours per Day Year Hours per Day 2008 2.2 2012 2.5 2009 2.3 2013 2.3 2010 2.4 2014 2.4 2011 2.6 Source: Data extracted from E. C. Baig, "The Hottest Digital Trends," USA Today, May 26, 2015, p. BI.