Exhibit 11.20
The following questions use the data below.
A store wants to predict quarterly sales. The owner has collected 3 years of sales data and wants your help in analyzing the data using Holt's method. 
-Refer to Exhibit 11.20. What formulas should go in cells E3:G16 of the spreadsheet if Holt's method is used to forecast sales?
Definitions:
Cohorts
Groups of people banded together or treated as a group, often referred to in research or demographics studies.
Social Security
A government program designed to provide financial assistance to people with little or no income, especially the elderly, disabled, and unemployed.
Social Change
The transformation over time of the institutions, culture, and structure of society.
Infant Mortality Rate
The number of deaths per year of infants under age 1 for every 1000 live births.
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