The following data, stored in CoreAppliances provide the total number of shipments of core major household appliances in the U.S. from 2000 to 2014 (in millions).

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 concerning the total number of shipments of core major household appliances in the U.S. from 2000 to 2014 (in millions)?

Transcribed Image Text:

Year Shipments Year 2000 2001 2002 2003 2004 2005 2006 2007 38.4 38.2 40.8 42.5 46.1 47.0 46.7 44.1 39.8 36.5 38.2 36.0 35.8 39.2 41.5 2010 2012 2013 2014