Exhibit 18.4.The following ratio-to-moving averages for the seasonally adjusted series were found by the decomposition method applied on a time series representing quarterly sales for the last four years: 
Refer to Exhibit 18.4.What is the seasonal index for the fourth quarter?
Definitions:
Activism
The policy or action of using vigorous campaigning to bring about political or social change.
John Dewey
An American philosopher, psychologist, and educational reformer whose ideas have been influential in education and social reform, advocating for a philosophy of pragmatism and democracy in education.
Pragmatism
A philosophical tradition centered on the practical application of ideas and the value of actions based on their outcomes or usefulness in addressing problems.
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