Consider the time series of quarterly sales in thousands shown in Table 14.4.6. The seasonal indices are

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Consider the time series of quarterly sales in thousands shown in Table 14.4.6. The seasonal indices are 0.89 for quarter 1, 0.88 for 2, 1.27 for 3, and 0.93 for 4. 

a. Find the seasonally adjusted sales corresponding to each sales value. 

b. In which quarter is the most business generally done? 

c. As indicated in the data, sales increased from 817 to 1,073 in 2015 from quarters 2 to 3. What happened during this period on a seasonally adjusted basis? 

d. As indicated in the data, sales decreased from 1,084 to 819 in 2014 from quarters 3 to 4. What happened during this period on a seasonally adjusted basis? 

e. The exponential trend values for the four quarters of 2019 are 1,964, 2,070, 2,183, and 2,301. Seasonalize these trend forecasts to obtain actual sales forecasts for 2019.

TABLE 14.4.6 Quarterly Sales Sales ($ Thousands) Quarter Sales ($ Thousands) Year Quarter Year 438 676 2012 2014 432 645

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